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Question 1 of 12

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Question 1 of 12

4.0 Points

If you drop Mg into HCl, you will produce hydrogen gas. If you perform this reaction over water at a temperature of 298.15 K at a pressure of 0.955 atm, and the vapor pressure of water at this temperature is 0.042 atm, what is the pressure of hydrogen (in mmHg)?

A.694 mm Hg

B.760.0 mm Hg

C.0.913 mm Hg

D.766.3 mm Hg

Question 2 of 12

4.0 Points

Suppose you are holding a container of gas, and the container has a fixed volume. If the gas pressure in the container has doubled while you were holding it, then what must have happened to the temperature?

A.The temperature became one half.

B.The temperature increased four times.

C.The temperature decreased one-third.

D.The temperature doubled.

E.not enough information

Question 3 of 12

4.0 Points

A balloon contains 0.600 L of 25.0 C gas, and it’s pressure is 14.7 psi. If I compress the balloon and increase the pressure to 22.6 psi and the temperature to 69.0 C, what will be the new volume of the gas in L?

A.2.77 L

B.0.691 L

C.0.448 L

D.1.45 L

Question 4 of 12

4.0 Points

Suppose you have a fixed container containing 16.71 grams of one of the diatomic (elemental) gases. If the container volume is 3.82 L, and the pressure is 4.78 atm, and the temperature is 100. °C, which gas is it? (R= 0.0821 L ∙ atm / mol ∙ K)

A.N2

B.O2

C.H2

D.F2

E.not enough information.

Question 5 of 12

4.0 Points

A bowl is filled with water at a temperature of 20.0°C and with a vapor pressure of 17.5 torr. If I collect a gas over this water, and the total gas pressure of the gas solution is found to be 277.9 torr, what would be the pressure of the pure gas?

A.260.4 torr

B.0.619 torr

C.0.0230 torr

D.0.596 torr

Question 5 of 12

4.0 Points

A bowl is filled with water at a temperature of 20.0°C and with a vapor pressure of 17.5 torr. If I collect a gas over this water, and the total gas pressure of the gas solution is found to be 277.9 torr, what would be the pressure of the pure gas?

A.260.4 torr

B.0.619 torr

C.0.0230 torr

D.0.596 torr

Question 7 of 12

4.0 Points

We discussed many different classifications of solids. How would you properly classify C?

A.nonbonding atomic solid

B.metallic atomic solid

C.ionic solid

D.covalent atomic solid

E.molecular solid

Question 8 of 12

4.0 Points

The natural tendency of a liquid to decrease the area of its surface as much as possible is known as what?

A.viscosity.

B.vaporization.

C.capillary action.

D.surface tension.

E.none of the above

Question 9 of 12

4.0 Points

Which of the following statements is NOT a correct statement concerning the surface tension of water?

A.Molecules on the surface of the liquid have fewer molecules to interact with.

B.Liquids tend to minimize their surface area.

C.Items with densities lower than water will sink due to surface tension.

D.Increased intermolecular forces increase surface tension.

E.All of the above statements are true

Question 10 of 12

4.0 Points

Which term is used to describe when a substance changes from a liquid to a gas?

A.volatile.

B.dynamic equilibrium.

C.condensation.

D.heat of fusion.

E.vaporization.

Question 11 of 12

5.0 Points

List all of the intermolecular forces that will be present in the following liquids, and CAPITALIZE (ALL CAPS) the strongest force for each liquid. The type of compound is indicated in brackets, and all numbers immediately following elemental symbols should be understood as subscripts.

(a) H2O

(b) CO2

(c) CO

Question 12 of 12

5.0 Points

What is the pressure of 214 g of hydrogen gas stored in a 66.5 L compressed gas cylinder at 244 K? You must show all work to receive credit.

 
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