1. 32.42 mol Gas A, 28.15 mol Gas B, and 19.69 mol Gas C are in a 1799 L chamber at STP. What is the partial pressure of Gas B (in atm)?

2. Ammonia is produced industrially at high temperatures and pressures. What is the density of ammonia gas at 550 °C and 245 atm?

3. If 0.598 mole of N2, 0.153 mol 02 and 0.079 mol CO2 are exhaled into a ballon, what volume would the balloon occupy at STP?

4. A small research submarine with a volume of 1.2 x 10⁵ L has an internal pressure of 1.0 atm and an internal temperature of 15° C. If the submarine descends to a depth where the pressure is 150 atm and the temperature is 3°C, what will the volume of the gas inside be if the hull of the submarine breaks?

5. If divers rise too quickly from a deep dive, they get a condition called "the bends" which is caused by the expansion of very small nitrogen bubbles in the blood due to decreased pressure. If the initial volume of the bubbles in a diver's blood is 15 mL and the initial pressure is 12.75 atm, what is the volume of the bubbles when the diver has surfaced to 1.00 atm pressure?

6. The gill is an obscure unit of volume. If some H2(g) has a volume of 17.4 gills at 100°F, what volume would it have if the T were reduced to 0°F, assuming that its pressure stayed constant?

7. A convenient lab source of high purity 0₂ is the decomposition of permanganate at 230C KMn04(s) 4                             

K2Mn04 +                      Mn02 +              02

Suppose 3.41 L oxygen is needed at atmospheric pressure (1 atm) and a temperature of 20°C. What volume of oxygen should be collected at 230°C and the same P to give this volume when cooled?

8. The density of an unknown gas is 1.23 g/L at OC and 1atm. What is the molecular mass of the gas?

9. Place the following gases in order of increasing average molecular speed at 25C: Ar, 0-14, N2, 0^-12F2.

10. A gas mixture contain 4.5 mol Br₂ and 33.1 molF2

a. Compute the mole fraction of Br₂ in the mixture

b. The mixture is heated to 150C and starts to react to give BrFs, at a certain point in the reaction, 2.2 mol BrFs is present Determine the mole fraction to Br2 in the mixture at that point.