Chemistry » Page 95

Chemistry

Janae Levine

How do the following changes affect the value of the equilibrium constant for a gas-phase exothermic reaction:

1. removal of a reactant

A. increase equilibrium constant

B. decrease equilibrium constant

C. no effect

2. removal of a product

A. increase equilibrium constant

B. decrease equilibrium constant

C. no effect

3. decrease in the volume

A. increase equilibrium constant

B. decrease equilibrium constant

C. no effect

4. decrease in the temperature

A. increase equilibrium constant

B. decrease equilibrium constant

C. no effect

5. addition of catalyst

A. increase equilibrium constant

B. decrease equilibrium constant

C. no effect

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Chemistry

Lane Fletcher

The heat capacity of a sample should be divided by which quantity to find the specific heat capacity?

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Chemistry

Jayden Santana

Propane (c3h8) burns in oxygen to produce carbon dioxide gas and water vapor. (a) write a balanced equation for this reaction. (use the lowest possible coefficients. include states-of-matter under the given conditions in your answer.)

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Chemistry

Dex

Gas X has a mass of 28.02 amu and gas Y has a mass of 32 amu. Which gas will diffuse faster?

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Chemistry

Erik Lucas

How can you tell the element based on electron configuration?

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Chemistry

Avah Crawford

Why do samples of platinum and copper have the same extensive properties?

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Chemistry

Laney Elliott

The major difference between a 1s orbital and a 2s orbital is that

The 2s orbital has a slightly different shape.

The 2s orbital is at a higher energy level.

The 2s orbital can hold more electrons.

The 1s orbital can have only one electron.

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Chemistry

Aleena Pugh

Which of the following is a method of purifying water?

A. Adding iodine

B. Aeration

C. Freezing

D. Fixation

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Chemistry

Jay Morrison

Subatomic particles has a mass of 1.7 x 10-27 kg

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Chemistry

Friday

Calculate the [ H + ] and pH of a 0.0040 M butanoic acid solution. The K a of butanoic acid is 1.52 * 10 - 5. Use the method of successive approximations in your calculations.

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Chemistry

Katie Meyer

If there is a tornado warning in your area you should

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Chemistry

Bobbie

Write and balance the equation for the formation of magnesium hydroxide and hydrogen from magnesium and water. Determine the possible mole ratios.

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Chemistry

Maverick Marks

Which subatomic particles contribute to an atom's mass number but not its atomic number

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Chemistry

Athena

Which two substances can not be broken down by chemical change?

(1) C and CuO (3) CO2 and CuO

(2) C and Cu (4) CO2 and Cu

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Chemistry

Aniyah Copeland

Which of the following atoms would bond covalently?

A. Carbon and neon

B. Lithium and fluorine

C. Silicon and sulfur

D. Calcium and magnesium

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