Which of the following is an acid?

Answer:

There are two questions here;

1. How many moles of tungsten atoms are there in 9.6*10^25 atoms of bromine?

This question is invalid as it is quite impossible to obtain the number of moles of tungsten atoms in another element, bromine. The question would have been written as the number of moles of tungsten atoms in 9.6*10^25 atoms of tungsten or bromine as the case may be.

To solve for the number of moles of an atom; we should recur that

I mole of an atom = 6.02*10^23 atoms

6.02*10^23 atoms  = 1 mole

9.6*10^25 atoms =  (9.6 *10^25 / 6.02*10^23) moles

                           = 1.595 *10^2 moles

2. The reaction of 9 moles of O2 will produce -------- moles of H2O in the combustion reaction of propane.

C3H8 + 5O2 -------> 3CO2 + 4H2O

5 moles of O2 produces 4 moles of H2O

9 moles of O2 will produce (9 * 4/ 5) moles of H2O

                              = 7.2 moles of H2O

9moles of O2 will produce 7.2 moles of H2O.

Answer:

0.225M of Fecl3

Explanation:

No of mole=mass/molar mass

Molar mass of fecl3= 162g/Mol

No of mole= 10/162= 0.062mol

No of Mol = concentrate × volume

Concentration= n/V = 0.062/0.275

C= 0.225M of FeCl3

Answer:

9L

Explanation:

Given parameters:

Initial volume V₁ = 3.6L

Initial pressure P₁  = 2.5atm

Final pressure P₂  = 1atm

Unknown:

Final volume V₂  = ?

Condition: constant temperature  = 25°C

Solution:

This problem compares the volume and pressure of a gas at constant temperature.

This is highly synonymous to the postulate of Boyle's law. It states that "the volume of a fixed mass of gas is inversely proportional to the pressure provided that temperature is constant".

Mathematically;

              P₁V₁  = P₂V₂

where P and V are pressure and volume

          1 and 2 are initial and final states

Input the parameters and solve for V₂;

          2.5 x 3.6  = 1 x V₂

                  V₂  = 9L

Polar solute dissolve in polar solvent and non polar solute dissolve in non polar solvent. Solubility is directly proportional o temperature. The solubility increases with temperature.

Solubility shows the extent of solubility of a solute in solvent to make a solution. Solute is substances that is present in small amount. solvent is a substance that is present in large amount. Its SI unit is gram per litre or g/L.

Bond strength affect the solubility of a solute in solvent. weaker the bond strength is, more the solubility is. The weaker bond can be easily broken by water molecule.

The solubility increases with temperature. The increase in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.

Therefore, solubility increases with temperature.

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The solubility of gases in water decreases as the temperature increases, a phenomenon explained by the disruption of attractive forces between gas molecules and water due to added thermal energy. This inverse relationship has significant implications, including the effects of thermal pollution on dissolved oxygen levels in natural water bodies and the principles underlying decompression sickness in divers.

The relationship between water temperature and the amount of dissolved gases follows an inverse pattern. As the temperature of water increases, the solubility of gases decreases. This phenomenon can be explained by examining the nature of molecular interactions and the process of dissolution. When gases dissolve in water, they form attractive interactions with water molecules. Dissolving is generally an exothermic process for gases, meaning it releases heat. However, with the addition of heat to the system—which is what happens when water temperature rises—this thermal energy disrupts the attractive forces between gas molecules and water, leading to a decrease in the gas's solubility.

Temperature, solubility, and dissolved gases are intricately linked. For instance, in natural water bodies, an increase in temperature due to thermal pollution can lead to lower dissolved oxygen levels, impacting aquatic life. Moreover, the principles governing this relationship also explain phenomena such as the release of gases from a carbonated beverage upon opening. This scenario is a direct application of Henry's Law, which states that the solubility of a gas in a liquid at a specific temperature decreases as the partial pressure of that gas above the liquid decreases.

The practical implications of this phenomenon extend to various scenarios, including environmental impacts like thermal pollution and human activities such as diving, where understanding the solubility of gases is crucial to avoiding decompression sickness.

Answer: 5.039moles

Explanation:

No. of moles=mass/molar mass

= 362.7/72= 5.039moles

Molar mass of C5H12= 72

Final answer:

To find the number of moles of C5H12 in 362.8 grams, divide the mass by the molar mass of C5H12 (72.0 g/mol), resulting in 5.04 moles.

Explanation:

To calculate how many moles of C5H12 are in 362.8 grams of the compound, you first need to determine the molar mass of C5H12. The molar mass of a compound is calculated by summing the molar masses of all atoms in the molecule. For C5H12, the calculation is as follows:

Carbon (C) has a molar mass of 12.0 g/mol, and there are 5 carbon atoms, which contributes 5 * 12.0 = 60.0 g/mol.Hydrogen (H) has a molar mass of 1.0 g/mol, and there are 12 hydrogen atoms, which contributes 12 * 1.0 = 12.0 g/mol.

Therefore, the molar mass of C5H12 is 60.0 g/mol (carbon) + 12.0 g/mol (hydrogen) = 72.0 g/mol.

To find the number of moles, divide the mass of the compound by its molar mass:

Moles of C5H12 = Mass of C5H12 / Molar mass of C5H12 = 362.8 g / 72.0 g/mol = 5.04 moles.

So, there are 5.04 moles of C5H12 in 362.8 grams of the compound.

The rise time of moon is from the evening about 3 PM. The visibility of moon in earth depends on the clouds and climate.

Moon is the only natural satellite for earth and it revolves around earth about in equal time as it takes to rotate in its own axis. Moon experience a gravitational pull from earth and moon in turn have the same force towards earth.

The time at which moon touches the upper edge of the horizon is called moon rise. The time we see moon in the sky will change with each seasons and with the rotation speed of earth.

When the whether is cloudy or rainy, moon will be invisible between the clouds. Usually moon rises at evening time about 3 PM and starts to brighten tonite. The position of moon changes as it is revolving around earth .

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Answer:

The answer to your question is 1795.5 grams of CO₂

Explanation:

Data

mass of carbon dioxide = ?

mass of Octane = 571.3 g

Process

1.- Write the balanced chemical reaction

         C₈H₁₆ + 12O₂   ⇒  8CO₂  +  8H₂O

2.- Calculate the molar mass of octane and carbon dioxide

Octane = (12 x 8) + (16 x 1) =96 + 16 = 112 g

Carbon dioxide = 8[ 12 + 2(16)] = 352 g

3.- Use proportions to find the mass of carbon dioxide

              112 g of Octane ---------------- 352 g of carbon dioxide

              571.3 g of Octane -------------  x

                    x = (571.3 x 352) / 112

                    x = 201097.6 / 112

                   x = 1795.5 grams of CO₂

Answer:C

Explanation:

Final answer:

A brightly glowing light bulb in a conductivity apparatus indicates the presence of an electrolyte in the solution, meaning it contains enough ions to conduct electricity.

Explanation:

When a conductivity apparatus is placed in a solution and the light bulb glows brightly, this indicates that the solution contains an electrolyte. An electrolyte is a substance that dissociates into ions when dissolved in water, which allows the solution to conduct electricity.

The brightness of the light bulb in the conductivity apparatus depends on the concentration of ions in the solution. A bright light suggests a high concentration of ions, corresponding to a strong electrolyte, while a dim light would indicate a lower concentration of ions, which would be a weak electrolyte.

The conductance of an aqueous solution containing the substance can be measured to identify if a substance is a strong, weak, or nonelectrolyte. To conduct electricity, the solution must contain freely mobile, charged species. Therefore, when the power supply is turned on and the light bulb in the conductivity apparatus glows brightly, the solution provides a path for the current to flow due to the presence of these charged ions.

ΔH° = -769.2 kJ is required.

Explanation:

Given equations are:

Pb(s) + PbO₂(s) + 2 H₂SO₄(l) → 2 PbSO₄(s) + 2H₂O(l);  ΔH° = –509.2 kJ ------1

SO₃(g) + H₂O(l) → H₂SO₄(l);  ΔH° = –130. kJ ----2

From the above 2 equations, by adding or subtracting or multiplying or dividing the required amount to get the final equation by means of Hess's law.

Multiplying eq. 2 by 2 we will get,

2 SO₃(g) + 2 H₂O(l) → 2 H₂SO₄(l) ;  ΔH° = -260 kJ ----3

Adding it to eq. 1 we will get,

Pb(s) + PbO₂(s) + 2 H₂SO₄(l) → 2 PbSO₄(s) + 2H₂O(l);  ΔH° = –509.2 kJ ------1

2 H₂SO₄ and 2 H₂O gets cancelled since they are on opposite sides, and the ΔH° values are added to get the ΔH° value of the required equation as,

Pb(s) + PbO₂(s) + 2 SO₃(g) → 2 PbSO₄(s)

ΔH° = -509.2 - 260 = -769.2 kJ

Answer:

By contracting, muscles pull on bones and allow the body to move. ... For example, the biceps and triceps muscles work together to allow you to bend and straighten your elbow. When you want to bend your elbow, your biceps muscle contracts (Figure below), and, at the same time, the triceps muscle relaxes.

Explanation:

Answer:

When skeletal muscles contract, bones move. But how do muscles make your bones move? A voluntary muscle usually works across a joint. It is attached to both the bones on either side of the joint by strong cords called tendons. A tendon is a tough band of connective tissue that connects a muscle to a bone. Tendons are similar to ligaments, except that ligaments join bones to each other. Muscles move the body by contracting against the skeleton. When muscles contract, they get shorter. By contracting, muscles pull on bones and allow the body to move.

Muscles can only contract. They cannot actively extend, though they can move or relax back into the non-contracted neutral position. Therefore, to move bones in opposite directions, pairs of muscles must work in opposition. Each muscle in the pair works against the other to move bones at the joints of the body. The muscle that contracts to cause a joint to bend is called the flexor. The muscle that contracts to cause the joint to straighten is called the extensor. When one muscle is contracted, the other muscle from the pair is always elongated.

For example, the biceps and triceps muscles work together to allow you to bend and straighten your elbow. When you want to bend your elbow, your biceps muscle contracts (Figure below), and, at the same time, the triceps muscle relaxes. The biceps is the flexor, and the triceps is the extensor of your elbow joint. Other muscles that work together are the quadriceps and hamstrings used to bend and straighten the knee, and the pectorals and trapezius used to move the arms and shoulders forward and backward. During daily routines we do not use muscles equally. For example, we use our biceps more than our triceps due to lifting against gravity.

The biceps help contract the arm, while the triceps help extend the arm

The biceps and triceps act against one another to bend and straighten the elbow joint. To bend the elbow, the biceps contracts and the triceps relaxes. To straighten the elbow, the triceps contract and the biceps relax.

Hope this helps!

Answer: the answers is A) The CaCI2 beaker has more ions in solution.

Explanation:

The CaCl2 beaker has more ions in solution. Therefore, the correct option is option A among all the given option.

An atom or molecule is said to be an ion if one or more of its electrons in the valence state have been gained or lost, giving it a net positive and negative electrical charge. In other terms, a chemical species has an unbalanced quantity of protons compared to electrons.

Monatomic ions are defined as those made up of just one atom. The hydrogen ion H+ serves as an illustration. Polyatomic ions, also known as molecular ions, on the other hand, are made up of two or more atoms. 1 mole of NaCl is dissolved in a 1000 grams of water and 1 mol CaCl[tex]_2[/tex] is dissolved in a second beaker containing 1000 grams of water. The CaCl2 beaker has more ions in solution.

Therefore, the correct option is option A.

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Answer:

The answer to your question is    V = 0.32 L

Explanation:

Data

Volume of NH₃ = ?

P = 3.2 atm

T = 23°C

mass of CaH₂ = 2.65 g

Balanced chemical reaction

               6Ca  +  2NH₃   ⇒   3CaH₂  +  Ca₃N₂

Process

1.- Convert the mass of CaH₂ to moles

-Calculate the molar mass of CaH₂

 CaH₂ = 40 + 2 = 42 g

                             42 g ------------------ 1 mol

                              2.65 g --------------  x

                              x = (2.65 x 1)/42

                              x = 0.063 moles

2.- Calculate the moles of NH₃

                     2 moles of NH₃ --------------- 3 moles of CaH₂

                      x                        --------------- 0.063 moles

                                x = (0.063 x 2) / 3

                                x = 0.042 moles of NH₃

3.- Convert the °C to °K

Temperature = 23°C + 273

                      = 296°K

4.- Calculate the volume of NH₃

-Use the ideal gas law

              PV = nRT

-Solve for V

                V = nRT / P

-Substitution

                V = (0.042)(0.082)(296) / 3.2

-Simplification

               V = 1.019 / 3.2

-Result

               V = 0.32 L

Answer:

9.09cm3

Explanation:

The following data were obtained from the question:

Mass of dimethyl sulfoxide = 10g

Density of dimethyl sulfoxide = 1.10gcm−3

Volume of dimethyl sulfoxide =?

The density of a substance is simply the mass substance per unit volume of the substance. It is represented mathematically as:

Density = Mass/volume.

With the above formula, we can obtain the volume of dimethyl sulfoxide as follow:

Density = Mass/volume

1.10gcm−3 = 10g/ volume

Cross multiply to express in linear form

1.10gcm−3 x Volume = 10g

Divide both side by 1.10gcm−3

Volume = 10g / 1.10gcm−3

Volume = 9.09cm3

Therefore, the volume of dimethyl sulfoxide the student should pour out is 9.09cm3

Answer:2.Sulfur?3.Neptune4.outer

Explanation:

Answer:

Option C. Kc = [CO2] / [C] [O2]

Explanation:

The balanced equation for the reaction is given below:

C(s) + O2(g) <===> CO2(g)

The equilibrium constant for a reaction is simply the ratio of the concentration of the products to the concentration of the reactants.

Thus, the expression for the equilibrium constant for the above equation is given by:

Kc = [CO2] / [C] [O2]

Answer: The maximum amount of C that can be produced is 2.0 mol.

Explanation:

The balanced equation will be as follows.

        [tex]4A + 3B \rightarrow 4C[/tex]

As we are given that,

   moles of C = moles of A = [tex]\frac{4}{3}[/tex] moles of B

When we react 2.0 mol A with 3.0 mol B then the limiting reagent is A as specie A has less number of moles. Therefore, the maximum amount of C which can be produced is as follows.

          [tex]\frac{2.0}{4} \times 4[/tex]

              = 2.0 mol

Therefore, we can conclude that the maximum amount of C that can be produced is 2.0 mol.

The maximum amount of product C that can be produced when reacting 2.0 mol A with 3.0 mol B is 2.0 mol C.

This is because the stoichiometry of the reaction indicates that 2.0 mol A can produce a maximum of 2.0 mol C, and this is the limiting reactant in the reaction. The information that 3.0 mol B can produce 4.0 mol C is irrelevant in this case since B is in excess and the amount of product C formed is limited by the amount of reactant A.

To understand this, let's consider the stoichiometry of the reaction:

[tex]\[ aA + bB \rightarrow cC \][/tex]

 From the given information, we can deduce the following stoichiometric coefficients for the reactants:

[tex]\[ 2.0 \text{ mol A} \rightarrow 2.0 \text{ mol C} \] \[ 3.0 \text{ mol B} \rightarrow 4.0 \text{ mol C} \][/tex]

However, since A is the limiting reactant, we use its stoichiometry to determine the maximum amount of C that can be produced:

[tex]\[ 2.0 \text{ mol A} \rightarrow 2.0 \text{ mol C} \][/tex]

Thus, even though there is excess B that could theoretically produce more C, the actual amount of C produced is constrained by the amount of A present. Therefore, the reaction of 2.0 mol A with 3.0 mol B will yield 2.0 mol C, as A is the limiting reactant.

Answer:

1.7 L

Explanation:

1.5M = 1.5 mol/1L

1.5 M means that 1 L solution has 1.5 mol HCl

1.5 mol HCl ----- 1 L

2.5 mol HCl ---- xL

x=(2.5*1)/1.5 ≈ 1.7 L solution, so we need 1.7 L of water to make 1.7 L of solution.

Final answer:

To make a 1.5 M solution with 2.5 moles of HCl, you would need 1.67 liters of solution.

Explanation:

To calculate the volume needed to make a 1.5 M solution with 2.5 moles of HCl, we can use the formula for molarity (M), which is moles of solute divided by liters of solution. In this case:

M = moles of solute / liters of solution

Rearranging the formula to solve for the liters of solution, we get:

liters of solution = moles of solute / M

By plugging in 2.5 moles of HCl and a molarity of 1.5 M, the calculation becomes:

liters of solution = 2.5 moles HCl / 1.5 M

liters of solution = 1.67 L

Therefore, you would need 1.67 liters of solution to make a 1.5 M solution of HCl.

Answer:

90.9% is the percent yield of the reaction.

Explanation:

Mass of hydrogen gas = 24.2 g

Moles of hydrogen = [tex]\frac{24.2 g}{2g/mol}=12.1 mol[/tex]

[tex]2H_2+O_2\rightarrow 2H_2O[/tex]

According to reaction, 2 moles of hydrogen gas gives 2 moles of water , then 12.1  moles of hydrogen will give:

[tex]\frac{2}{2}\times 12.1mol=12.1mol[/tex]  water

Mass of 12.1 moles of water

= 12.1 mol × 18 g/mol = 217.8 g

Theoretical yield of water = 217.8 g

Experimental yield of water = 198 g

The percentage yield of reaction:

[tex]=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100[/tex]

[tex]=\frac{198 g}{217.8 g}\times 100=90.9\%[/tex]

90.9% is the percent yield of the reaction.

Answer:

The energy released as heat when 9.94 g Cu 2 O ( s ) undergo oxidation at constant pressure is -10.142 kJ

Explanation:

Here we have

2Cu₂O ( s ) + O₂ ( g ) ⟶ 4 CuO ( s ) Δ H ∘ rxn = − 292.0 kJ mol

In the above reaction, 2 Moles of Cu₂O (copper (I) oxide) react with one mole of O₂ to produce 4 moles of CuO, with the release of − 292.0 kJ/mol of energy

Therefore,

1 Moles of Cu₂O (copper (I) oxide) react with 0.5 mole of O₂ to produce 2 moles of CuO, with the release of − 146.0 kJ  of energy

We have 9.94 g of Cu₂O with molar mass given as 143.09 g/mol

Hence the number of moles in 9.94 g of Cu₂O is given as

9.94/143.09 = 6.95 × 10⁻² moles of Cu₂O

6.95 × 10⁻² moles of Cu₂O will therefore produce 6.95 × 10⁻² ×  − 146.0 kJ mol  or -10.142 kJ.

Final answer:

The energy released as heat when 9.94 g of copper(I) oxide undergoes oxidation is calculated by determining the moles of Cu2O from its mass and using the stoichiometry of the reaction along with its enthalpy change to find the energy change. The result is approximately -10.14 kJ.

Explanation:

The problem involves calculating the energy released as heat during the oxidation of copper(I) oxide (Cu2O) to copper(II) oxide (CuO), given the mass of copper(I) oxide and the enthalpy change of the reaction. The reaction is 2 Cu2O(s) + O2(g) → 4 CuO(s) with an enthalpy change (ΔH°rxn) of -292.0 kJ/mol.

To find the energy released, we first need to find the number of moles of Cu2O. The molar mass of Cu2O is 143.09 g/mol (2*63.55 + 15.99). Using the given mass of Cu2O (9.94 g), we have:

moles of Cu2O = mass (g) / molar mass (g/mol) = 9.94 g / 143.09 g/mol = 0.0694 mol

The reaction stoichiometry shows that 2 moles of Cu2O yield -292.0 kJ, so we need to calculate the energy for 0.0694 moles:

Energy released = 0.0694 mol * (-292.0 kJ/mol) / 2 = -10.14 kJ

Therefore, the energy released as heat when 9.94 g of Cu2O undergoes oxidation at constant pressure is approximately -10.14 kJ.

Answer:

The answer is A. a vector with magnitude and direction

Explanation:

If you're taking the Lesson 11: Motion & Forces Unit Review the answers are:

1. D. 325 kg · m/s

2. C. It is always the same as it was before the collision

3. C. It increases the time it takes for the person to stop

4. C. a 75kg dining table

5. B. The mass of the rocket decreases as fuel is burned, so the acceleration increases.

6. C. An increase in the distance between the objects causes a greater change in the gravitational force than the same increase in mass.

7. D. The hammer hits the ground before the feather on Earth, and the hammer and feather hit at the same time on the moon.

8. C. C

9. C. Surface 1 is blacktop, Surface 2 is gravel, and Surface 3 is ice.

10. B. using shaving cream, rather than shaving on dry skin

11. A. a vector with magnitude and direction

12. B. 10 N

13. B. There is a net force of 15 N allowing Levi and Clara to move the box.

14. D. Finley → Xander → Max

15. C. Carla slowed down in the beginning of her trip, stopped, and then sped up.

16. A. positive

17. B. His speed was 2 m/s, and his velocity was 0.

18. B. His speed was 2 m/s, and his velocity was 0.

19. A. the ocean surface

20. A. Atlanta

21. B. W

22. A. measurement and direction

**17 & 18 are the same question on the review

I just took the review so these are 100% correct :) (btw these are for Connexus... so yeah but I'm pretty sure they're all the same)

hope this helps :)

A force is a push or pull that can change the motion of an object. It has magnitude and direction, and there are different types of forces such as gravitational, frictional, and magnetic. Forces are measured in Newtons.

A force can be defined as a push or pull that can change the motion of an object. It is a vector quantity, which means it has both magnitude and direction. For example, when you push a book on a table, you exert a force on it that causes it to move.

There are different types of forces such as gravitational force, applied force, frictional force, and magnetic force. These forces can be measured using units like Newton (N) in the metric system. Understanding forces is essential in studying mechanics and how objects interact with each other.

In summary, a force is a physical interaction that causes a change in motion. It can be represented by vectors and is measured in units of Newtons.

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The pH of the solution after the addition of 75.0 mL of 0.10 M KOH to a 100.0 mL sample of a 0.20 M HF solution is approximately 2.57. This is calculated using the molar concentrations of HF and KOH, the equilibrium expression for HF, and the pH formula.

To calculate the pH of a solution after adding KOH to the HF solution, we first need to calculate the produced moles of HF and KOH. The molar concentration of HF is 0.20 M in 100.0 mL which is equal to 0.02 moles. Furthermore, the molar concentration of KOH is 0.10 M in 75.0 mL which is equal to 0.0075 moles.

Since KOH is a strong base and fully ionizes, all the moles of KOH will react with HF to form F- and H2O. This will result in 0.02 - 0.0075 = 0.0125 moles of HF remaining and 0.0075 moles of F- formed.

Next, we use the Ka expression of HF, which is Ka = [H+][F-]/[HF]. Since HF is a weak acid and partially ionizes, we can assume that the concentration of H+ equals that of F- at equilibrium. Substituting the values, we get 3.5 × 10-4 = x^2/0.0125, solving for x which represents [H+], it's about 0.0027 M

Finally, we can use the definition of pH = -log[H+] to find the pH of the solution, which gives a pH of around 2.57 after adding 75.0 mL of KOH to the HF solution.

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Answer:

A cell grows to its full size, The cell copies its DNA

Explanation:

I just did that question

During interphase, a cell grows to its full size and it copies its DNA. Division of the cytoplasm, nuclear division, and formation of two identical cells occur later in the cell cycle, not during interphase.

The events that occur during interphase, which is a phase in the cell cycle, include the following:

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Answer:

A & C im 99% sure

Explanation:

Answer: A and C is correct.

Explanation:

Mark brainliest please .

Answer:

The mass of cryolite will be produced = 71247 g or, 71.247 kg

Explanation:

The balanced chemical equation for the synthesis of cryolite

        Al₂O₃(s) + 6 NaOH(l) + 12 HF(g) → 2 Na₃AlF₆ + 9 H₂O(g)

Answer:

Finches after drought had stronger and larger beaks to demolish the harder and larger seeds that the drought brought, a difference from those that lived in wet times that had smaller, pointy beaks to eat smaller seeds.

Explanation:

This is called the theory of animal evolution, where animals adapt according to the environment, this theory was just analyzed by this species of animals and many more on the island of Galapagos by Darwin.

What I also approve of as that animal that survives a certain environment is the one that is considered most suitable to live in that place.

Answer:

3.1 *10^22 atoms Cu

Explanation:

M(Cu) = 63.5 g/mol

3.3 g Cu * 1mol Cu/63.5 g Cu = 0.0520 mol Cu

0.0520 mol Cu * 6.02*10^23 atoms Cu/1 mol Cu = 3.1 *10^22 atoms Cu

Answer:

false, false, true

Answer: 24.6kpa

Explanation:

This is a classic case where Boyle's Law can be applied.

The equation for Boyle's Law is given as: P1V1 = P2V2

Where P1 = initial pressure

P2 = final pressure

V1 = initial volume

V2 = final volume

From the question, P1 = ?, P2 = 98.2kpa , V1 =4L , V2 =1L

P1V1 = P2V2

P1 x 4L = 98.2 kpa x 1L

Make P1 subject of formula we then have:

P1 = 98.2kpa X 1L / 4L

= 24.6kpa

Answer:

24.6kpa

Explanation:

Answer:

4L

Explanation:

No of mole= concentrate × volume

Volume = n/C

V= 10/2.5 = 4L

Answer:

4 moles

Explanation:

The balanced equation for the reaction is given below:

N2 + 3H2 → 2NH3

From the balanced equation above,

1 mole of N2 produced 2 moles of NH3.

Therefore, 2 moles of N2 will produce = 2x2 = 4 moles of NH3.

Therefore, if we start with 2 moles of N2, then, we will produce 4 moles of NH3

Based on the balanced chemical equation, 2 moles of nitrogen can produce 4 moles of ammonia when reacted with sufficient hydrogen. The stoichiometric relationship is used to fill out the T-chart, demonstrating how the initial amounts of reactants lead to the production of the product.

The question at hand is regarding the stoichiometry of a chemical reaction in which nitrogen (N₂) and hydrogen (H₂) react to form ammonia (NH₃). Based on the balanced chemical equation N₂ + 2 H₂ → 2 NH₃, we can determine the stoichiometric relationship between nitrogen and ammonia. Each mole of nitrogen can produce two moles of ammonia. Therefore, starting with 2 moles of N₂, you can make 4 moles of NH₃.

Here is the T-chart filled out based on the balanced chemical equation:

Reaction
2 N₂ + 4 H₂ → 4 NH₃

Initial quantity (mol)
N₂: 2
H₂: -
NH₃: 0

Change (mol)
N₂: -2
H₂: -
NH₃: +4

Final quantity (mol)
N₂: 0
H₂: -
NH₃: 4