Which of these would a chemist most likely study?


why airplanes are able to fly

how rain affects statues

why monkeys have tails

where earthquakes tend to occur

1) Decomposition

2) Double replacement

3) Single replacement

4) Synthesis reaction

5) Single replacement

6) Synthesis reaction

7) Synthesis reaction

8) Single replacement

9) Double replacement

10) Synthesis reaction

11) Synthesis reaction

A chemical reaction is a process  that results in the conversion of one group of chemical compounds into another. In order to create a new material or substances, chemical bonds between atoms, ions, or molecules must be broken and formed. Reactants are the substances that start a chemical reaction, while products are the substances that come out of the process.

The law of conservation of mass requires that during a chemical process, the total amount of matter remains constant.

Learn more about reaction:https://brainly.com/question/28984750

#SPJ1

a) Moles of HCI that were needed is 14.88 mol  ; b) Grams of HCI that were needed is 670.14 g.

Equation where number of atoms of each element in the reactant is equal to the number of atoms of the same element in the products is called as the balanced equation.

a.) 30 g / 2.016 g/mol = 14.88 mol of H₂

From the balanced equation, we can see that one mole of H₂ is produced for every mole of HCl consumed. Therefore, the number of moles of HCl needed is also 14.88 mol.

b.) 2 moles of HCl are consumed for every mole of PbCl₂ produced

So, the number of moles of HCl needed to produce 9.2 moles of PbCl₂ is:

9.2 mol PbCl₂ × 2 mol HCl/mol PbCl₂ = 18.4 mol HCl

18.4 mol × 36.46 g/mol = 670.14 g of HCl

To know more about balanced equation, refer

https://brainly.com/question/11904811

#SPJ1

It took Approximately 52 minutes and 40 seconds for an electromagnetic signal to travel to Earth from Pioneer 11 when it was near Jupiter.

The speed of light, which is the speed at which an electromagnetic signal travels in a vacuum, is approximately 299,792,458 meters per second.

To find out how long it takes for an electromagnetic signal to travel from Pioneer 11 to Earth when it was near Jupiter, we can use the formula:

The distance between Pioneer 11 and Earth when it was near Jupiter is approximately 998 million km, or 998,000,000 km.

Converting this distance to meters, we get:

Dividing the distance by the speed of light, we get:

Converting this time to minutes and seconds, we get:

Rounding to the nearest minute and second, we get:

Therefore, it took approximately 52 minutes and 40 seconds for an electromagnetic signal to travel from Pioneer 11 to Earth when it was near Jupiter.

To learn more about electromagnetic signal, here

https://brainly.com/question/28542749

#SPJ1

When heated, ammonium nitrate decomposes explosively according to the balancing equation: 2 NH₄NO₃(s) + 2 N₂(g) + 4 H₂O(g) Calculate the total volume of gas generated by the full breakdown of 1.55 kg of ammonium nitrate (at 125 °C and 748 mmHg).

When ammonium nitrate is heated, it produces nitrous oxide and water molecules. When ammonium nitrate (NH₄NO₃) is heated, it produces nitrous oxide (N₂O) and water (H₂O).

Endothermic dissolution of ammonium nitrate in water occurs because more energy is consumed to separate the ions in the solid than is created when the ions establish new connections with water molecules.

To learn more about ammonium nitrate, visit

brainly.com/question/28866036

#SPJ1

The concentration of NaOH in the resulting solution is 1.80 mol/L.To determine the concentration of NaOH in the resulting solution, we need to use the equation:

What is concentration ?

concentration (in units of mol/L) = moles of solute / volume of solution (in units of L)

First, we need to calculate the moles of NaOH added to the flask:

moles of NaOH = mass of NaOH / molar mass of NaOH

moles of NaOH = 36.0 g / 40.00 g/mol

moles of NaOH = 0.900 mol

Next, we need to determine the volume of the solution. We know that 36.0 g of NaOH were added to a 500.0 mL volumetric flask, but the final volume of the solution is not given. We can assume that the volume of the solution is 500.0 mL, since that is the volume of the flask. However, we also need to take into account the fact that the addition of NaOH may cause the volume of the solution to increase slightly due to the dissolution of the solute.

Assuming that the volume of the solution is 500.0 mL, we can convert this to units of liters:

volume of solution = 500.0 mL / 1000 mL/L

volume of solution = 0.500 L

Now we can use the equation above to calculate the concentration of NaOH in the resulting solution:

concentration = 0.900 mol / 0.500 L

concentration = 1.80 mol/L

Therefore, the concentration of NaOH in the resulting solution is 1.80 mol/L.

To know more about concentration, visit:

https://brainly.com/question/23158560

#SPJ1

Complete question is: If 36.0 g of NaOH (MM = 40.00 g/mol) are added to a 500.0 mL volumetric flask, and water is added to fill the flask, 1.80 mol/L concentration of NaOH in the resulting solution.

The word equation for the given skeleton equation is: Solid aluminum + gaseous oxygen → Solid aluminum oxide.

Chemical equations are a way of representing chemical reactions using chemical formulas and symbols. They provide a concise and standardized way of describing chemical reactions and are an important tool for chemists to communicate and understand chemical changes.

In any chemical equation, reactants are written on left side of an arrow, whereas the products are written on right side. The arrow indicates the direction of reaction, from the reactants to products.

Chemical equations use chemical formulas to represent the elements and compounds involved in a reaction.

To know more about chemical equations, refer

https://brainly.com/question/26694427

#SPJ1

Due to the principle of overlay, in an intact sequence of sedimentary stones, every single layer of rock is elder that the one above and younger that the one below it, with the oldest rocks at the bottom as the latest ones at the top

The multiple vertical layers of sedimentary material demonstrate the original horizontality concept (see Figure below). The law in deposition states that the youngest layers of rocks occupy the highest point whereas the earliest were at the bottom.

The Theory of superposition, that asserts that in an unbroken horizontal succession of rocks, the most ancient layers are on the bottom, and gradually younger ones on top, aids geologists in correlating rock strata all around the world.

To know more about principle visit:

https://brainly.com/question/13619248

#SPJ1

The  volume of acetone would be required to purify a 5.0g sample of compound is 58.82ml

Let use the solubility data of acetone provided to calculate the volume.

First we will need to calculate the solubility of Y in 25 degree.

   Solubility of Y= 0.12g/10ml= 0.012g/ml.

Solubility of y in boiling acetone = 0.85g/10ml =0.085g/ml.

In order to purify y, we need to dissolve the amount of y in the 5.0g sample.

The amount of acetone needed to dissolve y in the sample is

amount acetone= mass of y/ solubility of y in boiling acetone.

amount acetone= 5.0g/0.085g/ml= 58.82ml.

Therefore, the  volume of acetone would be required to purify a 5.0g sample of compound is 58.82ml

Learn more about volume below.

https://brainly.com/question/30164274

#SPJ1

Answer:

a. SOLUTION:

Step 1: Write the balanced chemical equation.

C₂H₄ + 3O₂ → 2CO₂ + 2H₂O

Step 2: Calculate the number of moles of CO₂ formed by each reactant.

• Using C₂H₄

Based on the balanced chemical equation, 1 mole of C₂H₄ is stoichiometrically equivalent to 2 moles of CO₂.

The molar mass of C₂H₄ is 28.054 g/mol.

• Using O₂

Based on the balanced chemical equation, 3 moles of O₂ is stoichiometrically equivalent to 2 mole of CO₂.

The molar mass of O₂ is 31.998 g/mol.

Step 3: Determine the limiting reagent.

Since O₂ produced less amount of CO₂ than C₂H₄, O₂ is the limiting reagent.

Step 4: Determine the mass of CO₂ formed.

Note that the (maximum) mass of a product that can be formed is dictated by the limiting reagent. In this case, we will start at the number of moles of CO₂ formed from the limiting reagent (O₂) which is equal to 0.11022 mol.

The molar mass of CO₂ is 44.009 g.

Hence, 4.85 g of CO₂ can be formed.

------------------------------------------------------------

b. ANSWER:

The LR is O₂ and the ER is C₂H₄.

------------------------------------------------------------

c. SOLUTION:

The theoretical yield of the reaction is 4.85 g.

Hence, the percent yield of the reaction is 87.6%.

#CarryOnLearning

Explanation:

brainliest pls

Al₂(SO₄)₃ (ag) +2 K₃PO₄ (ag) → 2 AlPO₄ (s) + 3 K₂SO₄ (ag). This the balanced chemical equation. The sum of the coefficients of reaction is 7.

1) Name each component of the equation. Once the equation is balanced, the number of atoms of each kind must be equal on both sides.

2) What is each side of the equation's net charge? Once the equation is balanced, the net charge must be the same on both sides.

3) Start, if you can, with an element that is present in a single compound on each side of the equation. In order for the number of atoms of the element to be the same on both sides of the equation, adjust the coefficients (the numbers in front of the compound or molecule). To balance an equation, keep in mind that you must adjust the coefficients in the formulas, not the subscripts.

4) Once one element is balanced, proceed to balancing the other element. Continue until all components are in balance. It's simplest to finish with the elements present in their purest state.

5) Make sure the charge is balanced on both sides of the equation by checking your work.

To know more about atoms, visit:

https://brainly.com/question/30898688

#SPJ1

Explanation:

41.3 × (6.022 × 10²³)

248.7 × 10²³

2.487 × 10²⁵

The magnetic quantum number (ml) represents the orientation of the orbital in three-dimensional space the only possible value of the magnetic quantum number ml for a 1s electron is 0.

Quantum is the smallest possible unit of a physical quantity, such as energy or momentum. It is a fundamental concept in quantum mechanics, which is the branch of physics that deals with the behavior of matter and energy at the atomic and subatomic level.

The idea of quantization was first proposed by Max Planck in 1900, when he discovered that energy is emitted and absorbed in discrete units called "quanta" when studying the behavior of light and blackbody radiation. Later, this idea was extended to other physical quantities, such as the momentum and position of particles.

According to quantum mechanics, the behavior of particles and systems cannot be fully described using classical mechanics, which assumes that particles have definite positions and velocities at all times. Instead, the behavior of particles and systems is described using wave functions, which represent the probability of finding a particle at a given position and time.

The principles of quantum mechanics have important applications in many areas of physics, including atomic and molecular physics, condensed matter physics, and particle physics. They are also the basis.

To know more about quantum visit :

https://brainly.com/question/16746749

#SPJ1

Several factors can dictate entropy in an equation.

These include:

1. Phase changes

⇒ When a solid turns to a liquid, the entropy increases as the particles have more freedom to move around and thus have a greater ability for 'disorder'. Same goes for a liquid turning to a gas. In a gas, the intermolecular forces are much weaker than that of a solid or liquid, allowing the particles more freedom.

So, going from a solid to liquid to gas increases entropy, and going the other way, from gas to liquid to solid, decreases entropy.

Example:

H₂O(l) -> H₂O(g)

This will have a positive entropy change, as the water molecules are becoming gaseous and thus have more freedom.

2. Dissolution

⇒ Similarly, breaking up particles of a solute when dissolving in a solvent will increase entropy as the particles are no longer bound together.

So, dissolving a solute will increase entropy.

Example:

NaCl(s) -> NaCl(aq)

This will have a positive entropy change, as the NaCl particles are more free after being separated.

3. Number of products and reactants

⇒ Generally, if you have more moles of products than reactants, if they are the same phase then entropy will increase. Note this is not necessarily true if you form a gas from two non-gas reactants, as the gas will still have more entropy.

4. Temperature

⇒ Increasing temperature will increase entropy as the particles have more kinetic energy and are then moving faster.

-------------------------------------------

l. 2N2(g) + O2(g) → 2N2O(g)

3 moles of gas are forming 2 moles of gas. The phase of products and reactants are the same, so since we have less moles of product than reactant, entropy will be negative.

II. CaCO3(s) → CaO(s) + CO2(g)

1 mole of solid is forming 1 mole of solid and 1 mole of gas. There is a phase change from solid to gas, and there are more moles of product than reactant, entropy will be positive.

III. Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)​

While 3 moles of reactant are forming only 2 moles product, we are forming a gas from non-gaseous reactants, so entropy will be positive regardless.

Therefore, if 3.0 moles of Potassium chlorate are completely destroyed, 4.5 moles of oxygen will form.

Therefore, there will be 36=18 moles of water molecules in 3 moles of the material. Keep in mind that there are 6.02 x 1023 molecules in a mole of molecules. Thus, there will be 6.021023181.081025 water molecules in total here.

If 2 moles of Potassium chlorate decompose to form 3 moles of oxygen, then 1 mole of Potassium chlorate will decompose to form 3/2 moles of oxygen.

Therefore, to find out how many moles of oxygen will form from 3.0 moles of Potassium chlorate, we can use the following calculation:

moles of oxygen = moles of Potassium chlorate x (3/2)

[tex]moles of oxygen = 3.0 mol x (3/2)[/tex]

moles of oxygen = 4.5 mol.

T know more about moles visit:-

https://brainly.com/question/26416088

#SPJ1

we can estimate that approximately 1.54 grams of water will be produced when 4.95 grams of Fe3O4 react completely with hydrogen.

The balanced chemical equation for the reaction between Fe₃O₄  and hydrogen is:

Fe₃O₄ + 4H₂ → 3Fe + 4H₂O

we can see that 4 moles of hydrogen react with 1 mole of Fe₃O₄  to produce 4 moles of water.

To find the number of moles of Fe₃O₄  in 4.95g, we need to divide the mass by the molar mass of Fe₃O₄ :

4.95 g Fe₃O₄  / (231.53 g/mol Fe₃O₄ ) = 0.0214 mol Fe₃O₄

According to the mole ratio in the balanced equation, 4 moles of hydrogen produce 4 moles of water. Therefore, we can calculate the number of moles of hydrogen required to react with 0.0214 mol Fe₃O₄ :

0.0214 mol Fe₃O₄ × (4 mol H2 / 1 mol Fe₃O₄ ) = 0.0855 mol H2

Finally, we can use the molar mass of water to calculate the mass of water produced:

0.0855 mol H₂O × (18.02 g/mol H2O) = 1.54 g H₂O

Therefore, we can estimate that approximately 1.54 grams of water will be produced when 4.95 grams of Fe₃O₄  react completely with hydrogen.

learn more about stoichiometry here

https://brainly.com/question/16060223

#SPJ1

Answer:

Temperature is a measure of the average kinetic energy of the particles in a substance. Therefore, the substance with the least thermal energy would be the one with the lowest temperature and the lowest mass.

Using this information, we can see that the substance with the least thermal energy is 10 g of metal at 10°C. This is because it has both a lower temperature and a lower mass than the other substances listed. The other substances have a higher temperature and/or a higher mass, which means they have more kinetic energy and therefore more thermal energy.

The word equation for the skeleton chemical equation would be Ethane gas + Oxygen gas -> Carbon dioxide gas + Water vapor.

Described in this reaction, ethane (C2H6) and oxygen (O2) unite to synthesize carbon dioxide (CO2) and water vapor (H2O). The reactants are situated on the left side of the arrow marker, while the products are displayed on the right. All entities specified are presented in the gaseous state as denoted by the (g) symbol.

The word equation for the skeleton chemical reaction C2H6 (g) + O2 (g) -> CO2 (g) + H2O (g) is showcased as follows:

Ethane gas + Oxygen gas -> Carbon dioxide gas + Water vapor

Find out more on word equations at https://brainly.com/question/31549716

#SPJ1

The percent yield for the reaction is 13.1%. it is the weight of the product that was obtained to the theoretical yield as a percentage.

The percentage yield is the figure computed to represent the discrepancy between the theoretical yield and the actual yield of an experiment. Both the desired products and the by-products are produced when experimenting with various solutions or when preparing chemical solutions.

We must convert the amounts of NO and O2 to moles since 1 mol of NO reacts with 1/2 mol of O2:

moles of NO = 33.6 g / 30.01 g/mol = 1.12 mol

moles of O2 = 26.9 g / 32.00 g/mol = 0.84 mol

Since O2 is limiting, Our calculations will be based on the amount of oxygen present.

moles of NO2 = 0.84 mol O2 × (2 mol NO2 / 1 mol O2) × (2 mol NO / 1 mol NO2)

                       = 3.36 mol NO2

The molar mass of NO2 is 46.01 g/mol,

the theoretical yield in grams is:

mass of NO2 = 3.36 mol × 46.01 g/mol = 154.34 g

percent yield = (20.2 g / 154.34 g) × 100% = 13.1%

To know more about the percent yield visit:

https://brainly.com/question/11963853

#SPJ1

To produce 22.4 L of O2 at STP, we need 2 moles of H2O.

Standard temperature and pressure (STP) is a set of reference conditions used in chemistry and physics. It is defined as a temperature of 0 degrees Celsius (273.15 Kelvin) and a pressure of 1 atmosphere (760 mmHg or 101.3 kPa). At STP, 1 mole of any ideal gas occupies a volume of 22.4 liters.

The balanced chemical equation is :

2H2O(l) → 2H2(g) + O2(g)

From the equation, we can see that for every 2 moles of H2O, 1 mole of O2 is produced.

At STP (standard temperature and pressure), 1 mole of any ideal gas occupies 22.4 L.

Therefore, to produce 22.4 L of O2 at STP, we need 2 moles of H2O.

Learn more about standard temperature and pressure here : brainly.com/question/7581651

#SPJ1

The data collected by Leah and Paul supports Paul's opinion that matter can exist even when it is not visible.

Support is a term used to describe a range of services and resources offered to individuals in need. It can refer to providing help with practical tasks, such as helping someone to manage their finances or providing transport to medical appointments. It can also refer to providing emotional or social support. This could involve providing counselling or having regular conversations to help someone to feel understood and supported. Support can also refer to offering advice and guidance, or providing a safe space for someone to talk and express their feelings. In its broadest sense, support is about helping someone to have the best quality of life they can.

This is because the mass of the inflated bag is greater than the mass of the empty bag despite the fact that the volume of the inflated bag is much greater. This shows that the inflated bag contains air, which is matter, even though it cannot be seen.

To learn more about support
https://brainly.com/question/23849325
#SPJ1

A) The molecular formula is: P₄O₁₀; B) This gives us the empirical formula: C₂H₆O

The simplest whole number ratio of atoms in a compound is called the empirical formula.

A) Empirical formula mass of P₂O₅ = 2(atomic mass of P) + 5(atomic mass of O)

= 2(30.97 g/mol) + 5(15.99 g/mol)

= 141.94 g/mol

Molecular mass / Empirical formula mass = 283.88 g/mol / 141.94 g/mol = 2

This tells us that the molecular formula is twice the empirical formula, so the molecular formula is: P₄O₁₀

B)  moles of C = 52.14 g / 12.01 g/mol = 4.344 mol

moles of H = 13.12 g / 1.01 g/mol = 12.97 mol

moles of O = 34.73 g / 16.00 g/mol = 2.17 mol

4.344 mol / 2.17 mol = 2.00

12.97 mol / 2.17 mol = 6.00

2.17 mol / 2.17 mol = 1.00

This gives us the empirical formula: C₂H₆O

To know more about empirical formula, refer

https://brainly.com/question/1603500

#SPJ1

Sugar cane plantation owners needed cheap labor after the enslaved were freed.

We know that in the nineteenth century the era of slave trade was actually coming to a close and the concern of many of the slave owners both in Europe and America was the future of their agricultural businesses.

The slave owners mostly used the slaves to do the work on the farm and in the absence of the slaves, the work could not be done. This is why the owners of the slaves sought for cheap labor after the slaves were freed.

Learn more about slaves:https://brainly.com/question/16747534

#SPJ1

Sugar was important in the late nineteenth century for both dietary and economic reasons. It was consumed by all social classes and significantly influenced the labor practices in agriculture.

Based on the information provided, one can infer that sugar was of significant importance in the late nineteenth century. It served as a staple in people's daily diets and was enjoyed by all social classes, from shopgirls to kings. In the economic sphere, sugar cane farming was a notable industry. Sugar canes were labor-intensive to grow and harvest, which required plantation owners to seek cheap labor. This implies that the sugar industry had a substantial influence on labor practices during this era. It is therefore clear that sugar was not only a dietary necessity but also a crucial factor in the broader economic and social structure of the community.

https://brainly.com/question/33025766

#SPJ12

Answer:

The balanced chemical equation for the combustion of C2H4 (ethylene) is:

C2H4 + 3 O2 → 2 CO2 + 2 H2O

From the balanced chemical equation, we can see that 1 mole of C2H4 reacts to produce 2 moles of H2O.

First, we need to convert the given mass of C2H4 to moles using its molar mass. The molar mass of C2H4 is:

2(12.01 g/mol) + 4(1.01 g/mol) = 28.05 g/mol

Now, we can calculate the moles of C2H4:

moles of C2H4 = mass of C2H4 / molar mass of C2H4

moles of C2H4 = 16 g / 28.05 g/mol

moles of C2H4 ≈ 0.570 mol (rounded to three decimal places)

According to the balanced chemical equation, 1 mole of C2H4 produces 2 moles of H2O.

moles of H2O = 2 * moles of C2H4

moles of H2O = 2 * 0.570 mol

moles of H2O ≈ 1.140 mol (rounded to three decimal places)

Finally, we can convert the moles of H2O to grams using the molar mass of water (H2O), which is 18.015 g/mol.

mass of H2O = moles of H2O * molar mass of H2O

mass of H2O = 1.140 mol * 18.015 g/mol

mass of H2O ≈ 20.53 g (rounded to two decimal places)

So, approximately 20.53 grams of H2O will be produced by the combustion of 16 grams of C2H4.

Explanation:

Ideal gas law

PV = n R T        If P and V increase then T must increase

   ( n  and R   are constant)

Answer:  C1V1=C2V2

Explanation: i hope this help im want to help you please

leave 5

Given the following standard enthalpies of formation for the following substances, H2O (g) = -241.8 kJ/mol KOH (aq)=-482.4 kJ/mol KOH(s) =-425.8 kJ/mol The enthalpy of the reaction is -390.2 kJ/mol.

The standard enthalpy of formation, also known as the standard heat of formation, is the change in enthalpy that occurs during the synthesis of one mole of a substance from its component parts in their reference states, with all substances in their standard states. The IUPAC recommends using the standard pressure value of p = 105 Pa (= 100 kPa = 1 bar), while previous to 1982, the value of 1.00 atm (101.325 kPa) was used.A standard temperature doesn't exist. Its designation is fH. This symbol's superscript Plimsoll denotes that the process has been carried out under typical circumstances at the given temperature (typically 25 °C or 298.15 K).

The enthalpy of the reaction can be calculated using Hess's Law and the standard enthalpies of formation for the reactants and products. First, we need to determine the enthalpy of the reaction, ∆Hrxn. This is the sum of the standard enthalpies of formation for the products minus the sum of the standard enthalpies of formation for the reactants.

∆Hrxn = [2(-482.4) kJ/mol + (-241.8) kJ/mol] - [2(-425.8) kJ/mol + (-285.8) kJ/mol]

∆Hrxn = -390.2 kJ/mol

Therefore, the enthalpy of the reaction is -390.2 kJ/mol.

To know more about Hess's Law, visit:

https://brainly.com/question/14561923

#SPJ1

There are approximately 3.59 x [tex]10^{25}[/tex] molecules of [tex]CO_{2}[/tex] in 59.7 moles of [tex]CO_{2}[/tex].

What is Molecules?

Molecules are the smallest units of a chemical compound that retain the chemical properties and characteristics of that compound. They are composed of two or more atoms chemically bonded together. Molecules can be made up of atoms of the same element (as in diatomic molecules like oxygen gas, [tex]O_{2}[/tex]) or different elements (as in water,[tex]H_{2}O[/tex]which consists of two hydrogen atoms and one oxygen atom).

The term "59.7 molecules of [tex]CO_{2}[/tex]" is not a meaningful unit, as molecules are discrete entities and cannot be divided into fractions. However, assuming you meant to ask for the number of molecules in 59.7 moles of [tex]CO_{2}[/tex], we can use Avogadro's number to calculate it.

Avogadro's number is approximately 6.022 x [tex]10^{23}[/tex]molecules/mol, and it represents the number of entities (such as atoms, ions, or molecules) in one mole of a substance.

Given that you have 59.7 moles of [tex]CO_{2}[/tex], we can multiply this value by Avogadro's number to obtain the total number of molecules:

59.7 moles [tex]CO_{2}[/tex] x 6.022 x [tex]10^{23}[/tex] molecules/mol ≈ 3.59 x [tex]10^{25}[/tex] molecules of [tex]CO_{2}[/tex]

Learn more about Molecules from the given link

https://brainly.com/question/30375112

#SPJ1

Answer:A. The gas particles have essentially zero volume and no attraction

for one another.

Explanation: