The kinetic energy of a moving object depends on its mass and its
a. volume.
b. velocity.
c. distance.
d. acceleration.

Answer:

4

Explanation:

Answer:

created when two objects rub together

Explanation:

when you rub two objects together, it creates friction and friction is energy.

Answer:

For A: The molarity is the solution 9.706 M

For B: The molarity of the solution is 10.91 M.

For C: The molarity of the solution is 1.78 M.

Explanation:

Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L.

The formula used to calculate molarity:

\(\text{Molarity of solution}=\frac{\text{Number of moles of solute}}{\text{Volume of solution (L)}}\)                 ......(1)

For A:

Number of moles = 3.30 moles

Volume of solution = 0.340 L

Plugging values in equation 1:

\(\text{Molarity of solution}=\frac{3.30 mol}{0.340 L}=9.706 mol/L\)

For B:

Number of moles = 6.00 moles

Volume of solution = 550 mL = 0.550 L        (Conversion factor: 1 L = 1000 mL)

Plugging values in equation 1:

\(\text{Molarity of solution}=\frac{6.00 mol}{0.550 L}=10.91 mol/L\)

For C:

Number of moles = 0.0160 moles

Volume of solution = 9.00 mL = 0.009 L

Plugging values in equation 1:

\(\text{Molarity of solution}=\frac{0.0160 mol}{0.009 L}=1.78 mol/L\)

Answer:

Im sure it's 1500 mL

Explanation:

You would have ti multiply by 15 i think

Answer:

It is C) 1500 mL

Explanation:

It is C) 1500 mL

Answer:

The increase in the IMF in a molecule means that it will also be increasing in the boiling point.

Explanation:

IMF are important in this because they let you know which bonds are stronger than others.

For example, a hydrogen bond is much stronger than a dipole-dipole bond. And an ionic bond is much stronger than a hydrogen bond.

As you go increasing in IMF strength, that means that it will be harder for them to separate. This is why as the IMF bonds are increasing in strength, their boiling points will also be increasing because they would need more energy in order to be separated.

Answer:

4.3 moles of Fe2O3

Explanation:

The calculations are shown in the picture.

Answer:

I think its D sorry if im wrong

Answer:i think its D

Explanation:

According to the Department of Transportation (DOT), hazardous materials are defined as materials that can pose an unreasonable risk to health, safety, or property during transportation.

These materials can include explosives, flammable gases and liquids, toxic substances, radioactive materials, and more. The DOT has specific regulations in place for the transportation of these materials to ensure that they are handled and transported safely to minimize the risk of accidents or harm.

These regulations include:

It is important to follow these regulations to prevent accidents and protect the health and safety of those involved in the transportation of hazardous materials.

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Answer:

false

Explanation:

you have bromine , its a non metal and liquid in room temperature

To release 5500 kilocalories of energy, approximately 5500 grams of NH₃ should be decomposed.

The conversion factors for the given reaction are:

1 mole of NH₃ produces 3 moles of H₂ and 1 mole of N₂.

ΔH = + 22.0 kcal/mol (energy absorbed per mole of NH₃ decomposed).

a. To calculate the kilocalories of energy absorbed when 15.5 moles of NH₃ is decomposed:

Energy absorbed = ΔH * moles of NH₃

Energy absorbed = 22.0 kcal/mol * 15.5 mol = 341.0 kcal

b. To determine the energy absorbed when 250.5 grams of H₂ are produced, we need to convert the mass of H₂ to moles using its molar mass:

Molar mass of H₂ = 2.02 g/mol

Moles of H₂ = Mass / Molar mass = 250.5 g / 2.02 g/mol = 124.0 mol (approximately)

Energy absorbed = ΔH * moles of NH₃

Energy absorbed = 22.0 kcal/mol * 124.0 mol = 2,728.0 kcal

c. To find the energy absorbed in order to produce 1530.0 grams of N₂, we need to convert the mass of N₂ to moles using its molar mass:

Molar mass of N₂ = 28.02 g/mol

Moles of N₂ = Mass / Molar mass = 1530.0 g / 28.02 g/mol = 54.68 mol (approximately)

Energy absorbed = ΔH * moles of NH₃

Energy absorbed = 22.0 kcal/mol * 54.68 mol = 1,202.96 kcal (approximately)

d. The grams of NH₃ needed to release 5500 kilocalories of energy, we can rearrange the equation:

Grams of NH₃ = Energy released / (ΔH * moles of NH₃)

Grams of NH₃ = 5500 kcal / (22.0 kcal/mol * 1 mol)

Grams of NH₃ = 5500 g (since 1 kcal = 1 g)

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Answer:

Explanation:

1. Please provide the enthalpy info - I will work on it with the info

2.

i) Reaction a should be modified to match the number of S in equation:

 2S + 2O2 -> 2SO2     deltaH = -370kJ

ii) Reaction b should be written reversely to match the reactants of SO2:

 2SO2 + O2 -> 2SO3     deltaH = 256kJ

iii) Adding the equations together:

 2S + 3O2 -> 2SO3

iv) Enthalpy of the combined reaction = -370+256 = -114kJ

 It is negative so the reaction is exothermic.

Answer:

Explanation:

1 c. enthalpy change = enthalphies of formation of all products - enthalphies of formation of all reactants =  -526.3 kcal/mol

1 d. C3H8(g) + 5 O2 (g) → 3 CO2 (g)  + 4 H2O (l)    ΔH = -526.3 kcal/mol

The balanced half-reactions are: Oxidation half-reaction: 4Co → 4Co2+ + 8e-Reduction half-reaction: O2 + 2e- → 2O2 -

Given equation: 3O2+4Co⟶2Co2O3Using the symbol e− for an electron. The redox reaction can be broken down into two half-reactions. The reduction half-reaction is the one in which a species gains electrons and the oxidation half-reaction is the one in which a species loses electrons. The half-reactions are as follows: Reduction Half-reaction Half-reaction equation: O2 + 2e- → 2O2 -Oxidation number of oxygen in O2=0 and in O2^-= -1Charge on the left side = 0Charge on the right side = 2 x (-1) = -2Thus, 2 electrons are added to the left side to balance the charge, making the half-reaction:O2 + 2e- → 2O2 -Oxidation Half-reaction Half-reaction equation: 4Co → 4Co2+ + 8e-Oxidation number of cobalt in Co=0 and in Co2+ =+2Charge on the left side = 0Charge on the right side = 4 x (+2) + 8 x (-1) = -4Thus, 8 electrons are added to the right side to balance the charge, making the half-reaction:4Co → 4Co2+ + 8e-Thus, the balanced half-reactions are: Oxidation half-reaction: 4Co → 4Co2+ + 8e-Reduction half-reaction: O2 + 2e- → 2O2 -

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The molar concentration of ammonia is 2.976M.

Molarity of HCl = number of moles/ volume

Number of moles = Molarity of Hcl * volume

Hence the number of moles of ammonia =\(14.88 * 10^{-3}\)

From question volume of ammonia =\(5 * 10^{-3}\)

Molarity = \(14.88 * 10^{-3}/5 * 10^{-3}\)

Molarity  \(=2.976\)

What is meant by molar concentration?

Molar concentration is the most effective way of describing a solute concentration in a solution. Molarity is described as the total number of moles of solute dissolved per liter of solution,i.e., M = mol/L.

How do you calculate the molar concentration?

To calculate the Molar Concentration, we will find the molar concentration by dividing the moles by the liters of water used in the solution.

Thus, the molar concentration of ammonia is 2.976M

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Answer:

Hey mate.....

Explanation:

This is ur answer.....

An atmosphere is the layers of gases surrounding a planet or other celestial body. Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases.

Hope it helps!

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On the concentration of dissolved oxygen in the lake the following scenario would take place:

a. Increase.

b. Decrease.

c. Decrease.

We have,

a.

An increase in the population of fish would lead to more oxygen consumption through respiration, reducing the dissolved oxygen concentration as fish respire.

b.

The introduction of plant nutrients (phosphates and nitrates) can lead to eutrophication, promoting excessive plant growth.

As plants photosynthesize, they release oxygen, which might initially increase dissolved oxygen.

However, as these plants die and decompose, the decomposition process consumes oxygen, potentially decreasing the overall concentration.

c.

The accumulation of dead plant matter can lead to microbial decomposition, which consumes dissolved oxygen during the breakdown process, reducing the concentration of dissolved oxygen in the lake.

Thus,

a. Increase.

b. Decrease.

c. Decrease.

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Answer:

Two similar atoms or different atoms

Explanation:

A molecule is made up of at least two similar atoms or different atoms.

A molecule is the smallest particle of a substance capable of independent existence.

Answer: Two similar atoms or different atoms.

Have a great day!

The H₂SO₄ (sulfuric acid) and HSO₄⁻ (hydrogen sulfate or bisulfate ion) are considered a conjugate acid-base pair. The correct answer is yes.

H₂SO₄ (sulfuric acid) and  HSO₄⁻ (hydrogen sulfate or bisulfate ion) form a conjugate acid-base pair. In the context of the Bronsted-Lowry theory, an acid donates a proton (H+), while a base accepts a proton. When H2SO4 donates a proton, it becomes  HSO₄⁻.

Conversely, when  HSO₄⁻ accepts a proton, it reforms H₂SO₄. They are interconnected through the transfer of a proton, thus qualifying as a conjugate acid-base pair. This relationship allows for the reversible conversion between the two species through proton transfer reactions. Therefore, yes, H₂SO₄ and HSO₄⁻ are considered a conjugate acid-base pair.

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The volume of \(9.94 * 10^2^3\) atoms of\(Br_2\)is approximately 36.8784 liters.

To calculate the volume of a given number of atoms, we need to know the density of the substance and the molar mass. In this case, we have the number of \(Br_2\) molecules, and we need to convert it to volume.

First, we need to convert the number of atoms to moles. Since there are Avogadro's number (\(6.022 * 10^2^3\)) of atoms in one mole of any substance, we can calculate the number of moles as follows:

Number of moles = Number of atoms / Avogadro's number

= \((9.94 * 10^2^3) / (6.022 * 10^2^3)\)

= 1.649 moles (approximately)

Next, to calculate the volume, we need the molar volume, which is the volume occupied by one mole of a substance. At standard temperature and pressure (STP), the molar volume is approximately 22.4 liters per mole.

Volume = Number of moles x Molar volume

= 1.649 moles x 22.4 L/mol

= 36.8784 liters (approximately)

Therefore, the volume of \(9.94 * 10^2^3\)atoms of \(Br_2\) is approximately 36.8784 liters.

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1.4 g Co(OH)₂

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Unit 0

Atomic Structure

Aqueous Solutions

Stoichiometry

Step 1: Define

[RxN - Balanced] CoCl₂ + 2NaOH → 2NaCl + Co(OH)₂

[Given] 10.0 mL, 1.5 M CoCl₂

[Solve] grams Co(OH)₂

Step 2: Identify Conversions

[Base 10] 1000 mL = 1 L

[RxN] 1 mol CoCl₂ → 1 mol Co(OH)₂

[PT] Molar Mass of Co - 58.93 g/mol

[PT] Molar Mass of O - 16.00 g/mol

[PT] Molar Mass of H - 1.01 g/mol

Molar Mass of Co(OH)₂ - 58.93 + 2(16.00) + 2(1.01) = 92.95 g/mol

Step 3: Stoich

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs as our lowest.

1.39425 g Co(OH)₂ ≈ 1.4 g Co(OH)₂

Answer:

1.4 g Co(OH)₂

Explanation:

Molar mass of Co(OH)₂ = (58.9 + 16.0×2 + 1.0×2) g/mol = 92.9 g/mol

According to the given equation, mole ratio CoCl₂ : Co(OH)₂ = 1 : 1

No. of moles of CoCl₂ reacted = (1.5 mol/L) × (10.0/1000 mol) = 0.015 mol

No. of moles of Co(OH)₂ precipitated = 0.015 mol

Mass of Co(OH)₂ precipitated = (0.015 mol) × (92.9 g/mol) = 1.39 g / 1.4g

====

OR:

(1.5 mol CoCl₂ / 1000 mL CoCl₂ solution) × (10.0 mL CoCl₂ solution) × (1 mol Co(OH)₂ / 1 mol CoCl₂) × (92.9 g Co(OH)₂ / 1 mol Co(OH)₂)

= 1.39 g Co(OH)₂ / 1.4 g Co(OH)₂

Kc = [GSH]2[NADP+]/[GSSG] [NADPH] [H+]= (2.47 × 10^-8)^2 (1.00 × 10^-5)/(3.59 × 10^-5)(1.00 × 10^-4) (1.00 × 10^-7)= 1.073. Hence, the answer is option A. 1.073.

The equilibrium constant for the reaction is given by the ratio of the product of the concentrations of the products raised to their stoichiometric coefficients to the product of the concentrations of the reactants raised to their stoichiometric coefficients.

However, the given reaction is as follows;glutathione + NADPH + H+ ↔ reduced glutathione + reduced glutathione + NADP+The corresponding equilibrium constant expression is,Kc = [GSH]2[NADP+]/[GSSG] [NADPH] [H+]Where;[GSH] = Concentration of glutathione[NADPH] = Concentration of NADPH[H+] = Concentration of hydrogen ions[GSSG] = Concentration of reduced glutathione.

On substitution,Kc = [GSH]2[NADP+]/[GSSG] [NADPH] [H+]= (2.47 × 10^-8)^2 (1.00 × 10^-5)/(3.59 × 10^-5)(1.00 × 10^-4) (1.00 × 10^-7)= 1.073Hence, the answer is option A. 1.073.

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To identify a Lewis acid and base in a reaction, we might want to consider the steps below: :

In any chemical reaction, a Lewis acid is described a specie that can accept a pair of electrons, while a Lewis base is a species that can donate a pair of electrons.

In conclusion, in order  to identify a Lewis acid and base in a reaction, we will need to identify the species that can accept or donate a pair of electrons and go ahead to determine which one is the electron-pair donor and acceptor.

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Answer:

Acidic

Explanation:

pH from 0-6.9 are acidic substances

pH of 7 are neutral

pH above 7 to 14 are badic substances

Answer: Acidic

Explanation:

PH of 1-6 is considered acidic.

PH of 7 is neutral.

PH of 8-14 is considered basic (alkaline)

Because it improves food preservation and breaks down the sugars in the dough, the dough is fermented and proofed.

The ideal temperature for fermentation is 85° F.

What is fermentation?

Anaerobic degradation of molecules like glucose occurs chemically during fermentation.

What is proofing?

When making yeast bread and other baked goods, the process of proving involves letting the dough rest and rise one last time before baking. While the dough is resting, yeast ferments it and releases gases, leavening the dough.

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When a nucleus emits an alpha particle, the mass number of the nucleus decreases, and its atomic number also decreases.

Therefore, the correct answer is: (c). The mass number decreases and its atomic number increases.

The nuclei are incredibly tiny and dense. They are 10 thousand times smaller than an atom and have more than 99.9% of its mass! Protons, which have a positive charge, and neutrons, which have no electrical charge, make up the nucleus.

When a nucleus emits an alpha particle, the mass number of the nucleus decreases, and its atomic number also decreases.

An alpha particle is composed of two protons and two neutrons, which is equivalent to a helium nucleus (He²⁺). When an alpha particle is emitted from a nucleus, the mass number decreases by 4 (as the alpha particle has a mass of 4 atomic mass units) and the atomic number decreases by 2 (since the nucleus loses two protons).

Therefore, the correct answer is:

c. The mass number decreases and its atomic number increases.

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Answer:

example of a medium, it requires a transverse

Answer:

In chemistry, an ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding

Answer:

An Ionic compounds are compounds consisting of ions also held together by the attractive forces among the oppositely charged ions.

Explanation:

For example :

NaHCO3, sodium bicarbonate (baking soda; used in cooking)

NaCl, sodium chloride (common/ordinary salt)