Absorption of ultraviolet light by organic molecules always results in what process?A.Bond breakingB.Excitation of bound electronsC.Vibration of atoms in polar bondsD.Ejection of bound electrons

Answers

Answer 1

B) Absorption of ultraviolet light by organic molecules always results is Excitation of bound electrons.

B is the response to this query. Electronic excitation always happens when organic compounds absorb ultraviolet light. Bond breaking, ionization, or bond vibration may then follow, but none of these outcomes is assured by the absorption of UV light.

Due to the ultraviolet light's high frequency, which causes the electrons in an atom's outer shell to leap out of their ground state when excited, organic molecules that absorb ultraviolet light cause the bound electron to be excited. The energy that is transferred from the light to the atoms is what is causing this excitation.

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Related Questions

When 19.04 grams of methane (CH4) are burned (see equation below), how many moles of oxygen gas (O₂) will be used? Please round your answer to two digits after the decimal point and don't forget units and substance!
CH4 + 2 O2 --> CO2 + 2 H₂O ​

Answers

Answer:

The number of moles of oxygen gas used when 19.04 grams of methane is burned is 2.38 mol O2.

Explanation:

To answer this question, we need to use the balanced chemical equation provided and the given mass of methane to determine the number of moles of oxygen gas used.

First, we need to calculate the number of moles of methane present in 19.04 grams of CH4:

Number of moles of CH4 = mass of CH4 / molar mass of CH4

= 19.04 g / 16.04 g/mol

= 1.19 mol

Next, we can use the stoichiometric coefficients from the balanced equation to determine the number of moles of oxygen gas required to react with the 1.19 mol of CH4:

1 mol CH4 + 2 mol O2 → 1 mol CO2 + 2 mol H2O

From this, we can see that 1 mole of CH4 reacts with 2 moles of O2. Therefore, we can calculate the number of moles of O2 required as follows:

Number of moles of O2 = 1.19 mol CH4 x (2 mol O2 / 1 mol CH4) = 2.38 mol O2

Therefore, 19.04 grams of methane will react with 2.38 moles of oxygen gas.

Note: It's important to specify the substance and units in the answer, as requested.

what are the signs for the changes in enthalpy for the three steps involved in forming a solution?

Answers

The enthalpy changes associated with formation of a solution can be divided into three steps:

1.Breaking of intermolecular forces: This is the enthalpy change associated with breaking the intermolecular forces between solute molecules, such as van der Waals forces, and between solvent molecules. This enthalpy change is usually an exothermic process, meaning that energy is released when the molecules interact and form a solution. The magnitude of the enthalpy change in this step is dependent upon the strength of the intermolecular forces between the molecules.

2.Mixing of the two components: This is the enthalpy change associated with the mixing of the two components (solute and solvent). This enthalpy change is usually endothermic, meaning that energy is absorbed when the molecules mix together into a solution. The magnitude of the enthalpy change in this step is dependent upon the differences between the two components.

3.Solution formation: This is the enthalpy change associated with the formation of solute-solvent interactions. This may either be an exothermic or endothermic process, depending upon the types of interactions formed. The magnitude of the enthalpy change in this step is dependent upon the strength of the solute-solvent interactions.

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What is the charge of the common ion formed by each of these atoms? Either -2,-1,+1, or +2.
S, Br, I, Li, Sr, Mg, Na, Cs, Ba, F, and O

Answers

S: -2  (Sulfur) , Br: -1  (Bromine), I: -1  (Iodine) ,Li: +1  (Lithium) ,Sr: +2  (Strontium) ,Mg: +2  (Magnesium) ,Na: +1  (Sodium) ,Cs: +1  (Cesium), Ba: +2  (Barium) ,F: -1  (Fluorine) ,O: -2  (Oxygen)

What is Magnesium ?

Magnesium is an essential mineral found in the human body. It plays an important role in the body, acting as a cofactor in over 300 enzyme systems that regulate diverse biochemical reactions in the body, including protein synthesis, muscle and nerve function, blood glucose levels, and blood pressure regulation. Magnesium is also involved in energy production and metabolism and is necessary for the proper functioning of muscles, nerves, and enzymes. It helps to keep bones strong, maintains normal heart rhythm, and helps to regulate blood sugar and blood pressure levels. Magnesium is found in many foods, including green leafy vegetables, nuts, seeds, and some types of seafood.

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which substance would be separated last by decreasing the temperature from its initial value

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The substance that would be separated last by decreasing the temperature from its initial value depends on the specific system and the phase diagram of the substances involved.

In general, as the temperature of a system decreases, the substances with the highest melting or boiling points will be separated last, as they require the highest amount of energy to transition from a liquid or gas phase to a solid phase.

For example, if you have a mixture of water (H2O) and sodium chloride (NaCl) at room temperature and decrease the temperature, water will freeze into ice at 0°C (32°F), while sodium chloride will remain in a liquid state until it reaches its freezing point of 801°C (1474°F). Therefore, in this case, sodium chloride would be separated last by decreasing the temperature from its initial value.

However, the answer can be different for different systems and substances, and may also depend on other factors such as pressure and composition of the mixture.

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what is active ingredient in tylenol?

Answers

Acetaminophen, usually referred to as paracetamol, is the substance that makes Tylenol active. It functions as a painkiller and fever reducer by preventing the body's generation of certain molecules that ingredient

A material that is included into the creation of a product or combination is known as an ingredient. An active component in a medicine is the chemical molecule that gives the drug its therapeutic effects. Excipients usually referred to as inactive substances, are added to medications for a number of reasons, including to aid in absorption, enhance flavour or texture, or lengthen shelf life. A drug's purity and quality of components determine its effectiveness and safety. In particular, if you have allergies or are taking other drugs that might interfere with the active or inactive substances, it is crucial to thoroughly read the label and go through any concerns with a healthcare professional.ingredient

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Which pair lists the element with the lower first ionization energy first?A. Magnesium, CalciumB. Helium, NeonC. Oxygen, FluorineD. Chlorine, Sulfur

Answers

Helium, Neon are the elements with the lower first ionization energy first. The correct option is B.

Thus, Helium has a lower initial ionization energy than neon in this combination. The energy needed to remove an atom's outermost electron and leave behind a positively charged ion is known as the first ionization energy.

In contrast to neon, which has an extra electron in its valence shell, helium has a full valence shell with two electrons, making it more stable and less prone to lose an electron.

Helium has a lower initial ionization energy than neon as a result.  

Thus, Helium, Neon are the elements with the lower first ionization energy first. The correct option is B.

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what is PaCO2 normal range

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The normal range for PaCO₂ (partial pressure of carbon dioxide in arterial blood) is typically between 35 to 45 mm Hg (millimeters of mercury) or 4.7 to 6.0 kPa (kilopascals).

However, the normal range can vary slightly depending on the specific laboratory reference ranges used and the individual's age, sex, and health status. It is important to note that deviations from the normal range of PaCO₂ can be indicative of various respiratory and metabolic disorders, and therefore, interpretation of PaCO₂ results should be done in conjunction with other clinical data.

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some cars can use butane (c4h10) as feul 2c4h10+13o2->8co+10h2o

how many grams of h2o are produced 5.38 grams of o2

Answers

Answer:

Podemos utilizar la estequiometría de la reacción química para calcular la cantidad de agua (H2O) producida a partir de 5.38 gramos de oxígeno (O2).

La reacción química balanceada es:

2 C4H10 + 13 O2 → 8 CO + 10 H2O

La proporción molar entre O2 y H2O es 13:10. Primero, necesitamos determinar cuántos moles de O2 tenemos:

n(O2) = m(O2) / M(O2) = 5.38 g / 32 g/mol = 0.1681 mol

Según la estequiometría de la reacción, cada mol de O2 produce 10 moles de H2O. Ente

n(H2O) = 10 x n(O2) = 10 x 0,1681 mol = 1,681 mol

Finalmente, podemos calcular la masa de H2O producida:

m(H2O) = n(H2O) x M(H2O) = 1.681 mol x 18 g/mol = 30.258 g

Por lo tanto, se producen 30.258 gramos de H2O a partir de 5.38 gramos de O2.

Explanation:

espero te sirva

Classify Each Of The Following Substances And Descriptions As An Electrolyte Or A Nonelectrolyte.sodium chloride,Nacl,table sugar, sodium hidroxide,NaOH,
a saluble ionic compound,methanol,CH3OH,potassium iodide,Kl,
most molecular solutes, asubtance that form an aqueous solution that does not conduct electricity

Answers

Electrolytes: sodium chloride, potassium iodide, sodium hydroxide.

Nonelectrolytes: table sugar, methanol, and most molecular solutes.

Sodium chloride and potassium iodide are electrolytes because they are soluble ionic compounds that dissociate into ions in solution, allowing them to conduct electricity. Sodium hydroxide is also an electrolyte for the same reason.

Table sugar and methanol are nonelectrolytes because they do not dissociate into ions in solution, meaning they do not conduct electricity.

Overall, the classification of a substance as an electrolyte or nonelectrolyte depends on its ability to dissociate into ions in solution. Electrolytes dissociate into ions, allowing them to conduct electricity, while nonelectrolytes do not dissociate into ions and do not conduct electricity in solution.

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--The complete question is, Classify each of the following substances and descriptions as an electrolyte or a nonelectrolyte.

-most molecular solutes

-sodium chloride, NaCl

-potassium iodine, KI

-table sugar

-methanol, CH3OH

-sodium hydroxide, NaOH

-a substance that forms an aqueous solution that does not conduct electricity

-a soluble ionic compound--

The following reaction is an elementary process with ΔE equal to −109 kJ/mol.
CH3(g) + Cl2(g) → CH3Cl(g) + Cl(g)
The activation energy is 4 kJ/mol. What is the activation energy of the reverse reaction?

Answers

113 KJ/mol is the activation energy of the reverse reaction.

In physics and chemistry, activation energy seems to be the bare minimum of energy required for compounds to undergo a chemical reaction. A reaction's activation energy (Ea) is expressed in joules each for a mole (J/mol), joules per mole (kJ/mol), or kilocalories each for a mole (kcal/mol).

The magnitude of the potential barrier (also known as the energy barrier) separates minima of both the rate-dependent corresponding to the initial and ultimate thermodynamic states can be thought of as activation energy.

For a chemical change to progress at a reasonable rate, the system temperature should be high enough that there is a significant quantity of molecules with transcriptional energy at or greater than the activation energy. The phrase "activation energy" was coined.

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Drag each pressure unit with the corresponding number to describe standard atmospheric pressure

Answers

The answer to your question is:

Psi = 14.7Atm = 1kPa = 101.3          

What is Standard Atmospheric Pressure?

The definition of the standard atmosphere's unit of pressure is 101325 Pa. It is occasionally used as a standard pressure or a reference pressure. It roughly corresponds to the average atmospheric pressure at sea level on Earth.

Psi: means "Pounds of force per Square Inch of area " an is a unit of pressure.

Atm: means atmosphere and is a unit of pressure defined as 101325 Pa.

kPa: is defined as the force of 1 Newton applied over one square meter.

     ( 101325 Pa = 101.3 kPa)

Then

Psi = 14.7Atm = 1kPa = 101.3          

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sodium atomic number

Answers

The atomic number of sodium is 11.

Generally atomic number is defined as the number of a chemical element in the periodic system, whereas the elements are usually arranged in order of increasing number of protons present in the nucleus. Accordingly, the number of protons present in element, which is always equal to the number of electrons present in the neutral atom, is also known as the atomic number.

Sodium is the chemical element of the alkali metal group (Group 1 [Ia]) of the modern periodic table. Sodium is basically a very soft silvery-white metal which reacts when exposed to moisture. Sodium is the most common alkali metal and also it is the sixth most abundant element present on Earth, which comprises 2.8 percent of Earth's crust. The atomic number of sodium is 11.

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Which notation of a radioisotope is correctly paired with the notation of its emission particle?
1)³⁷Ca and ⁴₂He
2)²³⁵U and ⁰+₁e
3)¹⁶N and ¹₁P
4)³H and ⁰₋₁e

Answers

³⁷Ca and ⁴₂He is the notation of a radioisotope that is correctly paired with the notation of its emission particle.

Generally, radioisotope is defined as an unstable form of a chemical element that releases radiation as it breaks down and becomes more stable. Basically, radioisotopes may occur in nature or be made in a laboratory. Generally, in medicine, they are used in imaging tests and in treatment and it is also called radionuclide.

Generally, uranium is the best known example of a naturally-occurring radioisotope. All but 0.7 per cent of naturally-occurring uranium occurs as uranium-238 while the rest is the less stable, or more radioactive, uranium-235, which has three fewer neutrons in its nucleus.

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Samantha recorded observations on the similarities between the life cycle of an eagle and the life cycle of a moth that undergoes complete metamorphosis. Which observation is Samantha wrong about?


A moth and an eagle both start their life cycle as a fertilized egg.
A moth and an eagle both hatch from an egg outside of their mother.
A moth and an eagle both undergo complete metamorphosis with significant change during development.

A. I
B.I and II
II and III
III

Answers

Answer:

C. II and III

Explanation:

Observation I is correct, as both moths and eagles begin their life cycle as a fertilized egg. Observation III is also correct, as both undergo significant changes during development.

However, Observation II is incorrect. Eagles are born as live young, while moths hatch from their eggs as larvae and undergo complete metamorphosis before becoming an adult. Therefore, moths do not hatch from an egg outside of their mother, but rather hatch from an egg laid by their mother.

A monatomic gas and a diatomic gas have equal numbers of moles and equal temperatures. Both are heated at constant pressure until their volume doubles. What is the ratio �
diatomic /

monatomic Q diatomic ​
/Q monatomic ​
?

Answers

The ideal monatomic molecule has three degrees of freedom, thus let N=the total number of molecules in each gas maintained at temperature T.

Hence, the monatomic gas's typical kinetic energy  E₁=(3/2) Nkt

, then its heat capacity at constant volume,

[tex]e1=\frac{3}{2} nKt[/tex]

. [k= Boltzman constant]

Similarly, for the diatomic gas

Cv₂=5/2Nk

as 5 degrees of freedom are available to a diatomic molecule.

Now, each of the gases receives a certain quantity of energy E in the form of heat. If T₁ and T₂ are the corresponding temperature increases, then

E=Cv₁T₁=Cv₂T₂,

or,

T₁/T₂=Cv₂/Cv₁ = 5/3

So,

T1>T2

this monatomic gas will be more heated.

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The ratio of the final volumes is 1:1

The ratio of the final volume of the diatomic gas to that of the monatomic gas can be found using the ideal gas law, which relates pressure, volume, number of moles, and temperature:

PV = nRT

Where:

P = pressure

V = volume

n = number of moles

R = the gas constant

T = temperature

Since the gases are at the same temperature and have the same number of moles, their ratio of volumes will depend only on the ratio of their pressures.

Let's consider the monatomic gas first. Since the pressure is constant during heating, we can write:

P₁V₁ = nRT₁

After doubling the volume, the new volume is 2V₁, and we can write:

P₂(2V₁) = nRT₂

where P₂ is the new pressure and T₂ is the final temperature of the gas.

Dividing the second equation by the first equation, we get:

P₂(2V₁) / (P₁V₁) = nRT₂ / nRT₁

Canceling out n and rearranging the terms, we get:

P₂ / P₁ = (2V₁ / V₁) * (T₂ / T₁)

P₂ / P₁ = 2(T₂ / T₁)

Similarly, for the diatomic gas, we have:

P₃V₃ = nRT₁

P₄(2V₃) = nRT₂

Dividing the second equation by the first equation, we get:

P₄ / P₃ = (2V₃ / V₃) * (T₂ / T₁)

P₄ / P₃ = 2(T₂ / T₁)

Since both gases have the same number of moles and are heated at constant pressure, their initial pressures are the same (P₁ = P₃). Therefore, the ratio of the final pressures is:

P₂ / P₄ = (P₂ / P₁) * (P₃ / P₄) = 1 * (P₃ / P₄) = P₃ / P₄

Substituting the expressions we found for P₂ / P₁ and P₄ / P₃, we get:

P₃ / P₄ = (2(T₂ / T₁)) / (2(T₂ / T₁)) = 1

Therefore, the ratio of the final volumes of the diatomic gas to the monatomic gas is:

(2V₃) / (2V₁) = V₃ / V₁ = P₃ / P₁ = 1

So the ratio of the final volumes is 1:1. This means that both gases will occupy the same volume after being heated at constant pressure until their volume doubles, as long as they have the same number of moles and the same initial temperature.

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How do you find the boiling point given vapor pressure?

Answers

The boiling point of a liquid can be estimated from its vapor pressure using the Clausius-Clapeyron equation.

This equation relates the vapor pressure of a liquid to its boiling point and can be expressed as:

ln(P2/P1) = -ΔHvap/R * (1/T2 - 1/T1)

where P1 is the vapor pressure at temperature T1, P2 is the vapor pressure at temperature T2, ΔHvap is the enthalpy of vaporization, R is the gas constant, and ln denotes the natural logarithm.

To find the boiling point, you would need to know the vapor pressure at two temperatures and the enthalpy of vaporization. Rearranging the equation to solve for the boiling point, you would get:

T2 = -ΔHvap/R * (1/(ln(P2/P1)) + 1/T1)

Substituting the values of P1, P2, and T1 into the equation and solving for T2 will give you an estimate of the boiling point. Note that this equation is an approximation and assumes that the enthalpy of vaporization is constant over the temperature range of interest.

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A calcium supplement contains 570 mg of calcium per tablet. Write the equality for this statement. Express your answer using correct number of significant figures.

1 tablet = mg of calcium​

Answers

A calcium supplement contains 570 mg of the calcium per tablet. The equality for this statement is 610 mg of the calcium = 1 tablet .

The Amount of the calcium present in the calcium supplement is 610 mg per tablet . The Equality statement are obtained is expressed as follows: 610mg of the calcium = 1 tablet

Our  body needs calcium to be build and to maintain the strong bones. Our heart, muscles and the nerves also need the calcium to function it properly. When our body calcium intake is insufficient, and our body will remove the calcium from the bones, and making them weak and the brittle.

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The pyramid of memphis, in tennessee, stands 107 yards tall and has a square base whose side is 197 yards long. Explained

Answers

Rounding to the nearest cubic yard, the volume of the Pyramid of Memphis is approximately 1,376,886 cubic yards.

To find the volume of the Pyramid of Memphis, we need to use the formula:

Volume = (1/3) x Base Area x Height

where Base Area is the area of the square base, and Height is the height of the pyramid.

The area of the square base is:

Base Area = [tex](Side Length)^2[/tex]

= [tex](197 yards)^2[/tex]

= 38,809 square yards

The height of the pyramid is given as 107 yards.

Therefore, the volume of the pyramid is:

Volume = (1/3) x Base Area x Height

= (1/3) x 38,809 x 107

≈ 1,376,886 cubic yards

To find the volume of a three-dimensional object, you need to determine how much space it occupies. The formula for the volume of a three-dimensional object depends on the shape of the object.

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Note- The correct question would be as below

The Pyramid of Memphis, in Tennessee, stands 107 yards tall and has a square base whose side is 197 yards long. What is the volume of the Pyramid of Memphis, to the nearest cubic yard?

Complete the following mechanisms by adding the correct mechanism arrows to the reagents in the drawing window. Be sure to answer all parts._______ -> + LiOCH3

Answers

The mechanism arrow indicates that a nucleophilic substitution reaction is occurring.

What is  substitution reaction ?

A substitution reaction is a chemical reaction in which one functional group in a molecule is replaced by another functional group. It is generally a type of organic reaction in which an atom or group of atoms is replaced by another atom or group of atoms. This reaction can occur between molecules or within a single molecule. Substitution reactions are important in organic chemistry, as they are responsible for many of the transformations that are carried out on carbon-containing molecules. The most common types of substitution reactions are nucleophilic substitution reactions, electrophilic substitution reactions, and radical substitution reactions.

The lithium alkoxide (LiOCH3) is acting as a nucleophile, attacking the carbon atom of the starting material, resulting in the formation of a new carbon-oxygen single bond.

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what is 26 atomic number?

Answers

Answer: Fe (iron)

Explanation:

the whole number next to the symbols on the periodic table that ascend in order by 1 are the atomic numbers, just look for the symbol next to the number 26.

mass (g) to mass (g)
N2 + 3H2 > 2NH3
How many moles of hydrogen are needed to react with 2 grams of nitrogen?

Answers

Answer:

0.214 moles of hydrogen are needed to react with 2 grams of nitrogen.

Let be the solution to satisfying. (a) use euler's method with time step to approximate. (b) use separation of variables to find exactly

Answers

The errors in the approximations to y(0.2), y(0.6), and y(1) are 0.573, 0.004, and 0.031, respectively.

Using Euler's method with time step h=0.2, we have:

k tk yk

0 0 3

1 0.2 y₁ = y₀ + h f(t₀, y₀) = 3 - 0.2(3e⁻³) = 2.416

2 0.4 y₂ = y₁ + h f(t₁, y₁) = 2.416 -   [tex]0.2[0.2e^{-2.416)}[/tex]] = 2.073

3 0.6 y₃ = y₂ + h f(t₂, y₂) = 2.073 -  [tex]0.2[0.6e^{-2.073}[/tex]] = 1.805

4 0.8 y₄ = y₃ + h f(t₃, y₃) = 1.805 - [tex]0.2[0.8e^{-1.805}[/tex]] = 1.596

5 1.0 y₅ = y₄ + h f(t₄, y₄) = 1.596 - [tex]0.2[1e^{-1.596}[/tex]]  = 1.433

Therefore, the approximations of y(0.2), y(0.4), y(0.6), y(0.8), and y(1.0) using Euler's method with time step h=0.2 are 2.416, 2.073, 1.805, 1.596, and 1.433, respectively.

The differential equation y˙=3te−y is separable, so we can write it as:

dy / dt = 3t[tex]e^{-y}[/tex]

Separating variables as well as integrating both sides, we get:

∫ dy / [tex]e^{-y}[/tex] = ∫ 3t dt

-ln|[tex]e^{-y}[/tex]| = [tex]3t^{2/2+C}[/tex]

[tex]e^{-y}[/tex] = [tex]Ce^{-3t^{2/2} }[/tex]    

y(t) =-ln[tex][Ce^{-3t^{2/2]} }[/tex]]          

Using initial condition y(0) = 3,

3 = -ln(Ce⁰)

C = -e⁻³

Therefore, the exact solution to differential equation is:

y(t) = -ln[[tex]e^{3^{e-3t^{2/2} } }[/tex]] = 3 - (3/2)t²

The errors in the approximations can be computed as follows:

|y(0.2) - y₁| = |2.989 - 2.416| = 0.573

|y(0.6) - y₃| = |1.809 - 1.805| = 0.004

|y(1) - y₅| = |1.464 - 1.433| = 0.031

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--The given question is incomplete, the complete question is

"Let y(t) be the solution to y˙=3te−y satisfying y(0)=3 . (a) Use Euler's Method with time step h=0.2 to approximate y(0.2),y(0.4),...,y(1.0) . k tk yk 0 0 3 1 0.2 equation editor Equation Editor 2 0.4 equation editor Equation Editor 3 0.6 equation editor Equation Editor 4 0.8 equation editor Equation Editor 5 1.0 equation editor Equation Editor (b) Use separation of variables to find y(t) exactly. y(t) = equation editor Equation Editor (c) Compute the error in the approximations to y(0.2),y(0.6) , and y(1). |y(0.2)−y1|="--

For the list of alcohols rank the alcohols in strength from weakest acid t0 strongest acid: Weakest Strongest FzCHOH FzCOH FCH,OH CH;OH

Answers

Answer:

CH3OH (methyl alcohol)

FCH2OH (fluoromethanol)

F2CHOH (difluoromethanol)

F3COH (trifluoromethanol)

Explanation:

In general, the strength of an acid increases with the stability of the conjugate base. The more stable the conjugate base, the stronger the acid. In this case, we can compare the stability of the conjugate bases of the alcohols. The more stable the conjugate base, the weaker the acid.

The conjugate base of an alcohol is an alkoxide ion (RO-), formed by removing a proton (H+) from the alcohol. The stability of the alkoxide ion depends on the strength of the carbon-oxygen bond. The stronger the carbon-oxygen bond, the more stable the alkoxide ion, and the weaker the acid.

Therefore, we can rank the alcohols in terms of acidity as follows (from weakest to strongest):

c. CH3OH (methyl alcohol)

a. FCH2OH (fluoromethanol)

b. F2CHOH (difluoromethanol)

d. F3COH (trifluoromethanol)

This is because as we go from CH3OH to FCH2OH to F2CHOH to F3COH, the electronegativity of the atom attached to the carbon atom increases, leading to a stronger carbon-oxygen bond, and therefore a more stable alkoxide ion and a weaker acid.

can you go from an aldehyde to a carboxylic acid

Answers

Producing Carboxylic Acids from Primary Alcohols or Aldehydes via Oxidation.The potassium dichromate(VI) solution undergoes a reaction and changes colour from orange to green.

An organic substance with a carboxyl functional group is known as a carboxylic acid. They are extensively distributed in nature and are also produced artificially by people. When carboxylic acids deprotonate, a carboxylate anion with the general formula R-COO- is produced. This anion can be used to create a number of beneficial salts, including soaps. Because it is made up of two functional groups—a carboxyl group and a hydroxyl group attached to a carbonyl group—the carboxyl functional group that distinguishes carboxylic acids is uncommon. It is frequently written as -CO2H or -COOH in condensed form. An organic acid that has a carboxyl group (C(=O)OH) connected to an R-group is referred to as a carboxylic acid in organic chemistry. A carboxylic acid's usual formula is RCOOH or RCO.

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what name is given to the following reaction? disaccharide water → monosaccharide monosaccharide

Answers

The given reaction is hydrolysis.

Basically when we talk about hydrolysis, it is a chemical reaction where a larger molecule is broke down into smaller molecules or individual components using water.

Water is [tex]H_{2} O[/tex] and this can split into both H+ and OH- . This water can donates a hydrogen ion H+ to one part of the molecule and a hydroxyl group OH- to another part. Due to this, there happens a cleavage or separation in larger molecules.

In the given reaction molecule of water is used to break a disaccharide into two separate monosaccharides. Disaccharide is a molecule which constituted by two monosaccharides.

Same way above mentioned, the water molecule donates a hydrogen ion H+ to one of the monosaccharides and a hydroxyl group OH- to the other.

As a result the separation happens into two monosaccharides. Term "hydrolysis" literally means "breaking apart with water."

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Which of the following is NOT TRUE about simple distillation?
a. The greater the difference in the boiling points of the components, the better the separation.
b. The less volatile component boils first and travels along the condenser.
c. It can be applied to mixtures with components boiling below 150°C.
d. A sand bath can be used in place of a water bath to provide even heating of the flask.

Answers

Option - D:The statement that is NOT TRUE about simple distillation is d. A sand bath can be used in place of a water bath to provide even heating of the flask.

Simple distillation involves heating a mixture to evaporate the more volatile component, condensing the vapour, and collecting the purified liquid. As it can sustain a consistent temperature near to the mixture's boiling point, a water bath is frequently utilised to enable uniform heating of the flask. As a sand bath might have hot patches or temperature changes that can impact the separation's quality, it could not deliver as uniform heating. a technique for separating mixes in a boiling liquid combination based on variations in their volatilities. After applying heat to a sample combination, the components are instantly cooled by the action of cold water in a condenser. There are two steps in the distillation refining process.

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Which of the following actions would affect the secondary, but not primary, structure of a protein?A. Break the ionic bonds between amino acidsB. Change the sequence of amino acidsC. Break the hydrogen bonds between amino acidsD. Disrupt the interactions between two different polypeptide chains

Answers

Break the hydrogen bonds between the amino acids would affect the secondary, but not primary, structure of a protein. Option C is correct.

The secondary structure of a protein is determined by the regular repeating patterns of hydrogen bonds between the carbonyl group of one amino acid residue and the amine group of another amino acid residue.

Disrupting the hydrogen bonds between amino acids would affect the secondary structure of the protein, as it would cause the regular repeating patterns to be lost and potentially result in a loss of α-helices, β-sheets, or other regular structures.

However, breaking ionic bonds between amino acids, changing the sequence of amino acids, or disrupting interactions between different polypeptide chains would affect the primary or tertiary structure of the protein, respectively, and not the secondary structure.

Hence, C. Break the hydrogen bonds between amino acids is the correct option.

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In the following acid-base reaction, CH3NH3+ is the CH3NH2(g) + H2O(1) → CH3NH3(aq) + OH¯(aq)
Conjugate base
Conjugate acid
Acid

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In the given acid-base reaction, CH[tex]_3[/tex]NH[tex]_2[/tex](g) + H[tex]_2[/tex]O(1) → CH[tex]_3[/tex]NH[tex]_3[/tex]⁺(aq) + OH¯(aq), CH[tex]_3[/tex]NH[tex]_3[/tex] is the Conjugate acid.

What is acid-base reaction?

The exchange with one or maybe more hydrogen ions, H+, among species that could be neutral (molecules like water, H2O, or acetic acid, CH3CO2H), as well as electrically charged (ions like ammonium, NH4+, hydroxide, OH, or carbonate, CO32), is what is known as an acid-base reaction.

It also covers equivalent behavior of acidic ions and molecules (aluminum chloride, AlCl3, and the silver ion AG+) that do not give hydrogen ions. In the given acid-base reaction, CH[tex]_3[/tex]NH[tex]_2[/tex](g) + H[tex]_2[/tex]O(1) → CH[tex]_3[/tex]NH[tex]_3[/tex]⁺(aq) + OH¯(aq), CH[tex]_3[/tex]NH[tex]_3[/tex] is the Conjugate acid.

Therefore, in the given acid-base reaction, CH[tex]_3[/tex]NH[tex]_2[/tex](g) + H[tex]_2[/tex]O(1) → CH[tex]_3[/tex]NH[tex]_3[/tex]⁺(aq) + OH¯(aq), CH[tex]_3[/tex]NH[tex]_3[/tex] is the Conjugate acid.

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colligative properties depend only on solute concentration; the identity of the solute is not important.TrueFalse

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True.

Yes , Colligative properties depends only on the solute concentration and not on the identity of solute.

Colligative properties are those properties of solutions that depend on the ratio of the number of solute particles to the number of solvent particles in a solution, and not on the nature of the chemical species present.

The definition of colligative properties itself says the above stated statement is true or false .

Colligative properties include vapor pressure lowering, boiling point elevation, freezing point depression, and osmotic pressure.

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Transcribed Image Text:What is the formal charge of an oxygen atom that forms three bonds and has one lone pair? -2 -1 +1 +2

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It will have a formal charge of 1+ if it has three bonds in addition to one lone pair, like the hydronium ion does. When an oxygen atom contains one link, two lone pairs, and one unpaired (free radical) electron, it has a formal charge of zero and can also exist as a radical.

When an oxygen atom contains two bonds and two lone pairs, it is commonly said to have a formal charge of zero. Alternative configurations include oxygen with 3 lone pairs and 1 bond with a formal charge of 1+, and oxygen with 3 bonds and 1 lone pair and a formal charge of 1.With three bonds, what charge does oxygen have. Typically, oxygen has two bonds; nevertheless, on occasion.

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The Formal charge on the oxygen atom will be +2.

The formal charge of an atom is the difference between the number of valence electrons in the free atom and the number of electrons assigned to that atom in a Lewis structure.

In the structure, the oxygen atom is bonded to three hydrogen atoms and has one lone pair of electrons. To calculate the formal charge of the oxygen atom, we first need to determine the number of valence electrons in an oxygen atom, which is 6.

To assign electrons to the oxygen atom in the Lewis structure, we can follow the octet rule, which states that atoms tend to gain, lose, or share electrons in order to achieve a full outer shell of eight electrons (except for hydrogen, which only needs two). In the Lewis structure shown above, the oxygen atom has four valence electrons assigned to it: one from each of the three bonds and one from the lone pair. Therefore, the formal charge on the oxygen atom is:

Formal charge = valence electrons - assigned electrons

= 6 - 4

= +2

Therefore, the formal charge of the oxygen atom in this Lewis structure is +2.

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