An auditorium has dimensions 10m x 10m x 65m. How many moles of air fill this volume at STP? Select the correct answer

1. An auditorium has dimensions 10m x 10m x 65m. How many moles of air fill this volume at STP? Select the correct answer. • 2.9 x 105 • 2.9 x 108 • 2.9 x 102 • 2.9 x 104 • 2.9 x 106

2. An auditorium has a volume of 3 x 103 m3. How many molecules of air are needed to fill the auditorium at STP? (NA = 6.022 x 1023 (mol)-1) Select the correct answer. • 0.8 x 1029 • 0.8 x 1034 • 0.8 x 1021 • 0.8 x 1026 • 0.8 x 1033

3. In order for two objects to have the same temperature, they must _____ . Select the correct answer. • be in thermal equilibrium • be in thermal contact with each other • have the same relative "hotness" or "coldness" when touched • have all of these properties • have all these qualities, except for thermal equilibrium

4. A container with a one-liter capacity at 34°C is filled with helium to a pressure of 3 atm. (1atm = 1.0 x 105 N/m2) How many moles of helium does it hold? Select the correct answer. • 0.12 • 0.09 • 0.2 • 0.42 • 0.5

5. A pressure of 5 mm Hg is measured using a constant-volume gas thermometer at a temperature of 70°C . What is the pressure (in mm Hg) at the zero-point temperature? (0°C = 273.15K) Select the correct answer. • 4.0 • 6.0 • 4.8 • 4.5 • 27.9

6. A building made with a steel structure is 600 m high on a winter day when the temperature is 0°F. How much taller (in cm) is the building when it is 90°F? (The linear expansion coefficient of steel is 11 x 10-6 (°C)-1.) Select the correct answer. • 33 • 30 • 36 • 43 • 17

7. A thermometer registers a change in temperature of 105°F . What change in temperature does this correspond to on the Kelvin Scale? (0°C = 273.15K) Select the correct answer. • 58.3 • 180.8 • 76 • 88 • 193

8. A pebble-sized object and a bowling-ball sized probe from a spaceship land on a large asteroid that is far from any star. After a long period of time has passed, it is highly probable that the pebble and the probe _____ . Select the correct answer. • are in thermal equilibrium with one another • are not in thermal equilibrium with one another • are in thermal equilibrium with one another, but are not at the same temperature • have each had the same change in temperature • have each had the same change in volume

9. A bicycle pump contains air at STP. As the tire is pumped up, the volume of air decreases by 30% with each stroke. What is the new pressure of air (in atm) in the chamber after the first stroke, assuming no temperature change? Select the correct answer. • 1.4 • 0.7 • 2.6 • 0.9 • 2