Unit 8 Chemistry review

How would you convert 34^oC to Kelvin?

• K = ^oC + 273

• ^oC = K + 273

• K = ^oC - 273

• ^oC = K + 273

What formula would you use to solve the following: A sample of nitrogen gas was collected over water at a temperature of 23.0°C. What is the partial pressure of nitrogen if the atmospheric pressure (total) was 785 mmHg and the vapor pressure of water was 21.1 mmHg?

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What formula would you use to solve the following: A 0.562 L container of Helium has a pressure of 9.5 atm. What volume would be necessary to decrease the pressure to 2.4 atm?

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Which of the following is NOT a unit of Pressure?

• mmHg

• atm

• kelvin

• psi

A gas at a pressure of 2.2 atm occupies a volume of 20 L, if the pressure is reduced to 1.2 atm, what is closest to the new volume?

• 0.132 L

• 10.9 L

• 52.8 :

• 36.6 L

Which of the following is NOT true of the Kinetic Molecular Theory?

• It applies to all gas laws

• It states that ideal gasses occupy no space

• It states that ideal gasses have the highest density

• It states that ideal gasses don't attract each other

A gas at 23 ^oC occupies a volume of 250 L, if the gas is heated to a temperature of 46 ^oC, what is the new volume?

• 4.23 L

• 269 L

• 500 L

• 447 L

A gas with a pressure of 900 mmHg is held at a temperature of 40 ^oC, if the gas is heated to a temperature of 80 ^oC, what is the new pressure?

• 1015 mmHg

• 450 mmHg

• 798 mmHg

• 1800 mmHg

What volume does 3.2 moles of Fluorine gas occupy at STP?

• About 72 L

• About 0.09 L

• About 0.014 L

• About 111 L

A gas at STP occupies a volume of 3.4 L, If the pressure is increased to 1.2 atm and the Temperature is increased to 300K, what is the new volume?

• 3.1 L

• 20,073 L

• 4.98 L

• 0.32 L