give the atomic size periodic table!

°C is the symbol used for degrees Celsius, a unit of temperature in the metric system.  Thus, option D is the answer.

°C is the symbol used to represent degrees Celsius, which is a unit of temperature in the metric system. It is named after the Swedish astronomer Anders Celsius, who first proposed the Celsius temperature scale in 1742.

The Celsius scale is based on the freezing and boiling points of water, with 0 °C being the temperature at which water freezes and 100 °C being the temperature at which water boils at standard atmospheric pressure.

The Celsius scale is widely used in scientific and engineering applications, as well as in everyday life, particularly in countries that use the metric system. It is an important measurement in areas such as weather forecasting, medicine, and industrial manufacturing.

Learn more about degrees Celsius:

https://brainly.com/question/25936097

#SPJ4

There are 6.75 moles of NaCl in 5.4 L of 1.25 M NaCl.

What are moles?

Moles is a unit used in chemistry to measure the amount of a substance. One mole of a substance is defined as the amount of that substance that contains as many elementary entities (such as atoms, molecules, or ions) as there are atoms in 12 grams of carbon-12. The number of entities in one mole is known as Avogadro's number, which is approximately equal to 6.022 x 10^23.

To determine the number of moles of NaCl in 5.4 L of 1.25 M NaCl, we need to use the following formula:

moles = concentration x volume

where concentration is in units of M (moles per liter) and volume is in units of liters.

Substituting the given values, we get:

moles = 1.25 M x 5.4 L

moles = 6.75 mol

Therefore, there are 6.75 moles of NaCl in 5.4 L of 1.25 M NaCl.

To learn more about moles:

https://brainly.com/question/13314627

#SPJ1

To construct the reaction quotient Qc for a given chemical reaction, the concentrations of the products are placed in the numerator and the concentrations of the reactants are placed in the denominator. Each concentration term is raised to the power of its stoichiometric coefficient from the balanced equation.

The resulting expression is the reaction quotient, Qc:

Qc = [tex][C]^{c^ }[/tex][tex][D]^{d}[/tex]  / [tex][A]^{a}[/tex][tex][B]^{b}[/tex]                  

where [A], [B], [C], and [D] are the molar concentrations of the reactants and products, and a, b, c, and d are the stoichiometric coefficients of the balanced chemical equation.

The reaction quotient, Qc, is similar to the equilibrium constant, Kc, which is calculated using the same equation but under equilibrium conditions, where the reaction has reached its equilibrium state.

At equilibrium, the reaction quotient and the equilibrium constant have the same numerical value. If Qc < Kc, the reaction will proceed forward to reach equilibrium. If Qc > Kc, the reaction will proceed in reverse direction to reach equilibrium. If Qc = Kc, the system is at equilibrium.

To know more about reaction quotient here

https://brainly.com/question/24202150

#SPJ4

According to the structure of the3- methyl benzoic acid in space, it is polar in nature due the presence of carboxyl group and the slightly polar benzene ring. So option B is correct.

Here is the structure of the 3-methylbenzoic acid in space. For the proper structure, refer to the image attachment in this answer.

     H

      |

     C

     / \

   C   O-H

   / \  

 C   C  

 /     \

H       CH3  

In order to predict the polarity of any compound, it is essential to consider the electronegativity of the atoms involved in the formation of the molecule. In the case of 3-methylbenzoic acid, the oxygen atom in the carboxyl group (COOH) is highly electronegative, so it creates a polarity between the oxygen and carbon atoms. Also, the benzene ring has a slightly polar character due to the presence of  double bonded carbon-carbon atoms. Therefore, the 3-methylbenzoic acid molecule is polar in nature due to the presence of the carboxyl group and also due to slightly polar benzene ring.

Learn more about benzene ring at:

brainly.com/question/19260725  

#SPJ4

The substances having common ion cannot form precipitate during chemical change.

An ion is defined as an atom or a molecule which has a net electrical charge. There are 2 types of ions :1) cation 2) anion . The cation is the positively charged ion and anion is the negatively charged ion . As they are oppositely charged they attract each resulting in the formation of ionic bond.

Ions consisting of single atom are mono-atomic ions while which consists of two or more ions are called as poly-atomic ions . They are created by chemical interactions . They are very reactive in their gaseous state and rapidly react with oppositely charged ions resulting in neutral molecules.Ions are generated when substance is subjected to electrolysis.

Learn more about ions,here:

https://brainly.com/question/14982375

#SPJ9

109.5

when we see it in 3d dimension...the repulsion force of the bonding pairs maximaze the distance from each other, thus making the angle 109.5

The conclusion we can  draw from the above observation is   the given reaction will be proceed faster in the presence of the Manganese oxide as it  activation energy of the reaction in the presence of the Manganese oxide is lesser .

The substance that is increases the rate of the reaction without the itself undergoing any of the permanent change chemically or the quantitatively is called the catalyst.  The minimum energy in the excess of the normal energy that is the molecules will acquire so  to react in the collision with the each other is called the activation energy.

2H₂O₂  ---->  H₂O  +   O₂

The  reaction occurs in the presence of the either acetanilide , Ea is 112 kJ/mol or the magnesium oxide ,Ea is 49 kJ/mol. the activation energy of the reaction in the presence of the Manganese oxide is lesser than in the presence of the acetanilide. Therefore,  the given reaction will be proceed faster in the presence of the Manganese oxide .

To learn more about activation energy here

https://brainly.com/question/12977580

#SPJ4

Answer:

K was the most reactive metal.

Explanation:

K was reactive, 3/4 of the time, while the others were less. So therefore K was most reactive.

Answer:

k

Explanation:

(Part A) The thickness of the monolayer is approximately 3.734 μm. (Part B) The number of moles of oleic acid in the monolayer is approximately [tex]2.59*10^-^8 mol.[/tex] (Part C) Surface area is [tex]V = 1.119*10^-^3^4 m^3[/tex].

(Part A):-

The volume of the monolayer is given as [tex]7.34*10^-^6 mL[/tex].

Since a monolayer is a single layer of molecules covering the surface, we can assume that it covers the entire surface of the watch glass. The surface area of the watch glass can be calculated using the formula for the area of a circle:

[tex]A =\pi r^2[/tex]

here,

r is radius of the watch glass.

Reserving given value of the diameter (5 cm):-

[tex]r = d/2 = 2.5 cm = 0.025 m[/tex]

[tex]A = \pi(0.025 m)^2 = 0.00196 m^2[/tex]

Since the monolayer covers the entire surface area of the watch glass, we can assume that the thickness of the monolayer is the volume divided by the surface area:

t = V/A

Reserving given values:-

[tex]t = 7.34*10^-^6 mL * (1 cm^3/mL) / 0.00196 m^2[/tex]

[tex]t = 3.734*10^-^6 m = 3.734 \mu m[/tex]

Therefore, the thickness of the monolayer is approximately 3.734 μm.

(Part B):-

The number of moles of oleic acid in the monolayer can be calculated using the mass of oleic acid and its molar mass. We are given the mass of oleic acid in the monolayer as [tex]7.32*10^-^6 g[/tex].

n = m / M

here,

n is number of moles,

m is mass, and

M is molar mass.

Reserving given values:-

[tex]n = 7.32*10^-^6 g / 282.5 g/mol[/tex]

[tex]n = 2.59*10^-^8 mol[/tex]

Therefore, the number of moles of oleic acid in the monolayer is approximately [tex]2.59*10^-^8 mol.[/tex]

(Part C):-

We are given that the height of the molecule is 10 times larger than the radius, which means that the molecule can be approximated as a cylinder.

[tex]A = 2\pirh + 2\pir^2[/tex]

here,

h is height and

r is radius.

Since we are given that the height is 10 times larger than the radius, we can assume that h = 10r.

Reserving formula:-

[tex]A = 2\pir(10r) + 2\pir^2[/tex]

[tex]A = 22\pir^2[/tex]

We are also given that the volume of the monolayer is [tex]7.34*10^-^6 mL[/tex]. Assuming that each molecule occupies the same volume, we can calculate the volume of a single molecule as:

V = volume / number of molecules

The number of molecules can be calculated as the Avogadro constant [tex](6.022*10^2^3)[/tex] times the amount of oleic acid in the monolayer, in moles.

Reserving given values:-

[tex]V = 7.34*10^-^6 mL / (6.022*10^2^3 * 2.59*10^-^8 mol)[/tex]

[tex]V = 1.119*10^-^2^8 mL[/tex]

[tex]V = 1.119*10^-^3^4 m^3[/tex]

To know more about oleic acid please refer: https://brainly.com/question/27293852

#SPJ4

The molarity of the 1.5 liters of the aqueous solution containing 52 grams of lithium fluoride is 1.334 M.

The molarity of the solution can be calculated using the formula,

Molarity (M) = moles of solute / volume of solution in liters

The number of moles of LiF present in the solution,

Molar mass of LiF = 6.941 + 18.998 = 25.939 g/mol

Number of moles of LiF = mass of LiF / molar mass of LiF

Number of moles of LiF = 52 g / 25.939 g/mol = 2.002 mol

Next, we need to convert the volume of the solution from liters to moles:

Volume of solution = 1.5 L

Molarity (M) = 2.002 mol / 1.5 L = 1.334 M

Therefore, the molarity of the solution is 1.334 M.

To know more about the molarity, here

brainly.com/question/8732513

#SPJ4

When balancing a chemical equation, keep in mind that we are only permitted to alter the coefficients before a formula, not the subscripts within the formula.

What is a chemical equation?

Symbols are used in chemical equations to indicate things like the direction of a reaction and the physical states of the reacting parties. In the year 1615, the French scientist Jean Beguin created the first chemical equation.

Chemical equations can be used to depict chemical processes on paper. An illustration of that is provided below (for the reaction between hydrogen gas and oxygen gas to form water).

2[tex]H_{2}[/tex]+ [tex]O_{2}[/tex]→ 2[tex]H_{2}[/tex]O

As seen in the illustration given above, the reacting entities are written on the left side of the chemical equation, while the products created during chemical reactions are written on the right side.

The identities of the substances are altered by altering the subscripts in a formula. The formulas themselves cannot be changed because the equation reflects an actual chemical reaction.

Learn more about chemical equation:

https://brainly.com/question/26694427

#SPJ4

The transition metals are elements with partially filled d subshells. These elements are found in the middle of the periodic table.

Transition metals are elements with partially filled d subshells. These elements are found in the middle of the periodic table, between the alkali and alkaline earth metals on the left and the metalloids and non-metals on the right. The transition metals include elements like iron, copper, silver, and gold. They are known for their ability to form multiple oxidation states, which allows them to participate in a wide range of chemical reactions. The d subshell in transition metals is responsible for these unique properties, and it is partially filled with electrons.

Learn more about transition metals here: brainly.com/question/30551806

#SPJ4

Answer:

Ernest Rutherford used alpha particles in his famous gold foil experiment to test the Plum Pudding Model of atomic structure because they have a high energy and a large mass.

The Plum Pudding Model proposed by J.J. Thomson suggested that atoms consisted of a uniform, positively charged sphere with negatively charged electrons embedded within it, much like plums in a pudding. However, Rutherford's observations of the scattering of alpha particles as they passed through the gold foil showed that the Plum Pudding Model was incorrect.

When Rutherford directed a beam of alpha particles at a thin sheet of gold foil, he expected the alpha particles to pass straight through or be slightly deflected by the electrons in the gold atoms. However, he observed that a small fraction of the alpha particles were deflected at large angles or even bounced back in the direction from which they came. This could only be explained if the mass of the atom was concentrated in a small, positively charged nucleus at the center, surrounded by mostly empty space.

The reason that Rutherford used alpha particles in his experiment was because their high energy and large mass allowed them to penetrate the atoms of the gold foil and interact with the positively charged nucleus, revealing its presence and disproving the Plum Pudding Model.

Explanation:

Answer:

Rutherfords gold foil experiment involved sending positively charged alpha particles through a thin sheet of gold foil and defecting if there was any deflection of the particles. He found that most passed straight through yet some particles showed some deflection. This result contradicts the plum-pudding model of the atom because the plum pudding model does not explain the deflection of alpha particles.

Explanation:

Alpha particles are positive, so they might be repelled by any areas of positive charge inside the gold atoms. Assuming a plum pudding model of the atom, Rutherford predicted that the areas of positive charge in the gold atoms would deflect, or bend, the path of all the alpha particles as they passed through.

Yes all gases are homogenous mixture.

A homogeneous mixture is defined as a gaseous, liquid or solid mixture that has the same proportions of its components throughout a given sample. It remains uniform in throughout the composition. Basically, there is only one phase of matter observed in a homogeneous mixture.

Generally, in all types of gas mixtures, each component in the gas phase can be treated separately. Each component present in the mixture shares the same temperature and volume. (We must remember that the gases usually expand to fill the volume of their container; gases in a mixture also do that.) However, each gas always has its own pressure.

Learn more about homogenous mixture from the link given below.

https://brainly.com/question/30583932

#SPJ4

This can be explained by the ideal gas law, which states that pressure is proportional to the number of gas molecules within a container at a constant temperature. Therefore, as more gas molecules are produced during the reaction, the pressure within the container will increase.

What is Gas Law?

Gas laws are a set of fundamental principles that describe the behavior of gases under different conditions of temperature, pressure, and volume. The most commonly studied gas laws are Boyle's law, Charles's law, Gay-Lussac's law, and the combined gas law. Boyle's law states that at a constant temperature, the volume of a gas is inversely proportional to its pressure. Charles's law states that at a constant pressure, the volume of a gas is directly proportional to its temperature.

Gay-Lussac's law states that at a constant volume, the pressure of a gas is directly proportional to its temperature. The combined gas law combines these three laws to relate pressure, volume, and temperature of a gas. Gas laws are important in understanding the behavior of gases in many real-world applications, such as in chemical reactions, combustion engines, and weather forecasting.

The pressure inside the container will increase as the reaction occurs. This is because the reaction between magnesium and hydrochloric acid produces hydrogen gas, which is a gas that occupies space within the container. As the amount of gas within the container increases, the pressure inside the container will also increase if the temperature is held constant.

Learn more about   Gas Law  from given link

https://brainly.com/question/27870704

#SPJ1

Nuclear power plants produce electricity using energy from the radioactive decay of uranium-235. Option A is correct.

Nuclear power plants use nuclear reactors to produce heat through a process called nuclear fission, in which the nucleus of an atom is split into two smaller nuclei, releasing a large amount of energy. Uranium-235 is a naturally occurring radioactive isotope of uranium that is used as fuel in nuclear reactors because it undergoes nuclear fission more readily than other isotopes.

Uranium-238 is also used in nuclear reactors, but it must first be converted into plutonium-239 through a process called nuclear transmutation. Plutonium-235 and plutonium-238 are also used as nuclear fuel in certain types of nuclear reactors, but they are produced artificially through nuclear transmutation.

Hence, A. uranium-235 is the correct option.

To know more about Nuclear power plants here

https://brainly.com/question/4246037

#SPJ4

Answer:Option B ( No longer supports the latest results

Explanation:

The electrons on the outermost energy level of an atom are called Valence electrons.

Electrons located in this outer shell are called valence electrons and this shell is called valence shell. Normally, an atom is in its most stable and least active state when its outermost shell of electrons is full.

The electrons in the shell or energy level of the atom are called valence electrons.

The number of valence electrons of the neutral atom is the same as the number of the main group of the atom. The columns of an element in the periodic table can be used to determine its main group number.

For example, carbon belonging to group 4 has four valence electrons.

To know more about valence electrons, visit,

https://brainly.com/question/371590#:~:text=Expert%2DVerified%20Answer&text=Valence%20electrons%20are%20the%20electrons,Electrons%20are%20outside%20them%20both.&text=And%20the%20number%20they%20have,layer%20are%20the%20valence%20electrons.

#SPJ4

The mole  ratio of the nitric acid to water is 8:4

To balance a chemical reaction equation, you need to make sure that the number of atoms of each element is the same on both the reactant and product side.

We can see that in the question that the reaction equation can be said to be balanced as we can see in the image that have been attached and we are to find the mole ratio of the nitric acid having a mole coefficient of 8 and the water with a mole coefficient of 4.

Learn more about mole ratio:https://brainly.com/question/15288923

#SPJ1

The correct option is B , from the matrix to the intermembrane space.

The electron transport chain pumps protons from the matrix to the intermembrane space.

Protons are pushed out of the matrix and into the intermembrane space as a result of the electrons moving through the electron transport chain.

The electron transport chain in bacteria that use it to produce energy pushes H+ out of the cell, creating a proton-motive force across the plasma membrane that drives the ATP synthase to produce ATP.

The production of adenosine triphosphate is fueled by the protons that travel back from the intermembrane to the matrix in the mitochondria and from the thylakoid to stroma in the chloroplast via ATP synthase. As a result, both the stroma of chloroplasts and the matrix of mitochondria synthesize adenosine triphosphate.

To know about electron transport

https://brainly.com/question/18686654

#SPJ4

In 7.00 x 10²² molecules of NaOH, there are 0.465 grams.

To find out how many grams are 7.00 x 10²² molecules of NaOH, we need to use Avogadro's number in the formula:

mass = number of molecules x molar mass / Avogadro's number

First, let's find the molar mass of NaOH.

So, the molar mass of NaOH is:

22.99 g/mol + 16.00 g/mol + 1.01 g/mol = 40.00 g/mol

Next, let's plug in the values into the formula:

mass = (7.00 x 10²² molecules) x (40.00 g/mol) / (6.02 x 10²³ molecules/mol)

mass = 2800 x 10²² g / 6.02 x 10²³

mass = 4.65 x 10⁻¹ g

mass = 0.465 g

So, 7.00 x 10²² molecules of NaOH are equal to 0.465 grams.

Learn more about Avogadro's number here https://brainly.com/question/29367909

#SPJ11

While at rest, a normal animal cell has a high concentration of K+ ions within and a high concentration of Na+ ions outside. Outside of the cell, there are also more Cl- ions present.

While at rest, a normal animal cell has a high concentration of K+ ions within and a high concentration of Na+ ions outside. Outside of the cell, there are also more Cl- ions present. As a result, the cell membrane experiences an electrical potential differential and concentration gradient. At a typical resting potential of -70 mV, the potential difference is negative inside the cell and positive outside the cell. This potential is kept constant and allows for cell processes like signalling and metabolism by the passage of ions across the membrane via ion channels and pumps. The total charge balance inside the cell is also influenced by other anions, such as proteins and phosphates.

Learn more about concentration of Na+ ions here:

https://brainly.com/question/12608621

#SPJ4

When a solution of a2 is mixed with one containing c- ions, the color remains green therefore a2 is not a better oxidizing agent than c2.

This is a substance in a redox chemical reaction that gains or "accepts"/"receives" an electron from a reducing agent and is any substance that oxidizes another substance.

In this scenario we should note that:

Read more about Oxidizing agent here https://brainly.com/question/14041413

#SPJ1

Protecting forests and planting new trees have significantly diminished the effects of global warming on land.

Generally, Global warming is defined as the long-term heating of Earth's surface observed since the pre-industrial period (which is the period between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere. This term is usually not interchangeable with the term "climate change.

Basically afforestation is defined as the planting of saplings, trees to increase forest cover. Afforestation is basically a measure that is taken to protect and conserve our environment from the harmful effects of pollution and human development.

Learn more about Global warming from the link given below.

https://brainly.com/question/29625243

#SPJ4

The Kcat for the reaction at the pH 4.5 when no chloride is added when compound 3 is substrate is 2.5 × 10⁻² s⁻¹.

The concentration value of the enzyme is 5.0 uM, and the rate of the product formation for the compound 3 is 125 nM/s. The enzyme is saturated with the substrate because of the rate of the product synthesis and it did not change over the time of the first five minutes. The kcat value is  as follows :

Kcat = Vmax / [E]

= 125 nM/s / (5.0 uM)

= 2.5 × 10⁻² s⁻¹

thus, the Kcat value for the reaction  at the pH of 4.5 when no chloride is added and the compound 3 is the substrate is 2.5 × 10⁻² s⁻¹.

To learn more about Kcat here

https://brainly.com/question/4745688

#SPJ4

The melting point of a liquid can vary widely depending on the specific substance. However, in general, liquids have a melting point at or above room temperature, since they are in a fluid state at that temperature.

For example, the melting point of water, which is a common liquid, is 0 degrees Celsius (32 degrees Fahrenheit) at standard atmospheric pressure. However, there are many liquids that have much higher or lower melting points than water.

It's important to note that the melting point of a liquid is dependent on many factors, including pressure, purity, and the presence of impurities. Therefore, the melting point of a specific liquid may vary depending on the conditions under which it is measured.

To learn more about Melting point :

https://brainly.com/question/9116329

#SPJ4

Here, the temperature of the hot water is dropping means the temperature is absorbed from the surrounding. Thus, the reaction is endothermic. Therefore, we cant agree to the finding of Paul.

An endothermic reaction is the reaction in which the reactants absorbs heat energy to proceed the reaction. The enthalpy change during an endothermic reaction is positive.

In an exothermic reaction, heat energy is evolved from the system to the surroundings. Thus, the enthalpy change is negative here. The reactants when absorbs heat from the surroundings, the outside temperature drops. We feel cool in the reaction vessel.

Whereas in an exothermic reaction, the outside temperature increases by evolving heat from the reaction. Thus, we will feel hot on the reaction vessel. Here, the water temperature is decreasing which means the reaction is endothermic and not exothermic.

Find more on endothermic reactions:

https://brainly.com/question/10373907

#SPJ1

The given equation is the reaction between borax (Na2B4O7) and water (H2O) giving Sodium Tetrahydroxyborate (NaB(OH)4) and Sassolite (B(OH)3). The balanced equation is Na₂B₄O₇ + 7 H₂O → 2 NaB(OH)₄ + 2 B(OH)₃.

The given reaction is a double displacement reaction. In this type of reaction, two new products are formed by swapping two cations or anions. So to balance the given equation, follow the below steps.

1. Label each reactant and product using variables. We get,

a Na₂B₄O₇ + b H₂O → c NaB(OH)₄ + d B(OH)₃

2. Now create a system of equations for each element (Na, O, H, and B). We get,

Na: 2a = 1c + 0d

B: 4a = 1c + 1d

O: 7a + 1b = 4c + 3d

H: 2b = 4c + 3d

3. Now solve the variables a, b, c, and d. For this using the substitution/elimination method, we get, a=1, b=7, c=2, and d=2.

4. Finally, substitute these values in the equation, and we get,

1 Na₂B₄O₇ + 7 H₂O → 2 NaB(OH)₄ + 2 B(OH)₃.

To know more about double displacement reaction:

https://brainly.com/question/20038776

#SPJ4

The option that is NOT a reason to record accurate procedures and results during an experiment is: "Its not that important to record accurate procedures or data."

It is critical to record correct procedures and results so that others may reproduce the experiment and the researcher can repeat it in the future. Proper documentation also aids in the identification of any flaws or inconsistencies that may have happened during the experiment and may be resolved in future studies. Accurate protocol documentation enables other researchers to reproduce the experiment and confirm the findings. Replication is an important part of scientific study since it helps to establish the results' validity and dependability. If the techniques are not adequately documented, subsequent researchers may be unable to replicate the experiment, resulting in differences and doubt regarding the results.

For more such questions on experiment, click on:

https://brainly.com/question/17274244

#SPJ4

This indicates that the pressure inside the vessel will increase correspondingly if the temperature of the vessel is raised from 300 K to 450 K while maintaining a constant volume. Therefore 15 atm is the correct response to the question.

The ideal gas equation, which states that PV = nRT, where P is pressure, V is volume, n is the number of moles of gas, R is gas constant, and T is temperature in Kelvin, can be used to provide the solution.

The ideal gas law can be rearranged to solve for the pressure if the quantity of gas and the vessel's volume are both constant:

P = nRT/V

This indicates that the pressure inside the vessel will increase correspondingly if the temperature of the vessel is raised from 300 K to 450 K while maintaining a constant volume.

We can use the difference between the new temperature and the starting temperature to determine the new pressure:

When P1 and T1 are the beginning pressure and temperature, and P2 and T2 are the ultimate pressure and temperature, the equation P2/P1 = T2/T1 is used.

With the above numbers substituted, we obtain P2/P1 = 450 K/300 K = 1.5.

P2 = 1.5P1 is obtained by multiplying both sides by P1.

Since we are unsure of the starting pressure, we are unable to determine the precise value of the new pressure. The nearest solution can be found using the offered answer options, though.

Taking the initial pressure as a given is 10 atm, then the new pressure would be:

P2 = 1.5 x 10 atm = 15 atm

Therefore, the answer is (d) 15 atm.

learn more about temperature here:

https://brainly.com/question/11464844

#SPJ4