White Board Races

Ch. 11 Gas LawsReview Game

Question

What is the temperature and pressure for STP?

Answer

273 K (0oC)1 atm (760 mmHg)

Question

Draw the graph that relates pressure and volume for Boyle’s Law.

Answer

Question

You have a temperature reading of 25 K. Convert this to Celsius.

Answer

-248 oC

Question

How many liters (L) does one mole of gas occupy at STP?

Answer

22.4 L

Question

What unit of temperature do we have to use in gas law calculations?

Answer

Kelvin

Question

Is the air pressure on a rainy day higher or lower than the air pressure on a sunny

day?

Answer

Lower

Question

A tank of helium gas at 1.5 atm is what pressure in mmHg?

Answer

1,140 mmHg

Question

The volume of a gas with a pressure of 1.2 atm increases from 1.0 L to 4.0 L. What is

the final pressure of the gas, assuming constant temperature?

Answer

0.3 atm

Question

A gas sample in a closed, expandable container of initial volume 5.00 L was

allowed to warm from 25 °C to 35 °C. What was its new volume?

Answer

5.17 L

Question

A gas contained in a steel tank has a pressure of 1.5 atm at a temperature of

320 K. What will be the gas pressure when the temperature changes to 450 K?

Answer

2.1 atm

Question

At 570. mmHg and 25 °C, a gas sample has a volume of 2270 mL. What is the final

pressure (in mmHg) at a volume of 1250 mL and a temperature of 175 °C ?

Answer

1560 mmHg

Question

What is the volume of 64.0 g of O2 gas at STP?

Answer

44.8 L

Question

A sample contains 8.0 g of oxygen with a volume of 5.0 L. What is the volume after 4.0 g of oxygen is added, if temperature

and pressure do not change?

Answer

7.5 L

Question

What is the density, in grams per liter, of hydrogen gas (H2) at STP?

Answer

0.09 g/L

Question

How many moles of chlorine gas (Cl2) are in a 7.0 L tank if the gas has a pressure of 865

mmHg and a temperature of 24oC?

Answer

0.327 mol

Question

What is the volume, in L, of 1.20 g of carbon monoxide at 8oC if it has a pressure

of 724 mmHg?

Answer

1.04 L

Question

What is the molar mass, in g/mol, of an unknown gas in a 1.5 L container if 0.488 g of the gas has a pressure of 0.0750 atm at

19oC ?

Answer

104 g/mol

Question

If 12.8 g of aluminum reacts with HCl, how many liters of H2 would be formed at 715

mmHg and 19oC?

2Al + 6HCl 3H2 + 2AlCl3

Answer

18.1 L of H2

Question

If a mixture has a total pressure of 1.09 atm and the partial pressure of the first gas is 73 mmHg, what is the partial pressure in

mmHg of the second gas?

Answer

755 mmHg

Question

A 456 mL sample of oxygen gas (O2) is collected over water at a pressure of 744 mmHg and a temperature of 20oC. How

many grams of dry O2 are collected if the vapor pressure of water is 18 mmHg?

Answer

0.579 g of O2