1. Define Dalton's Law 2. At constant temperature, the volume of the container that a sample of nitrogen gas is in is doubled. As a result the pressure of the nitrogen gas is halved. The amount of nitrogen gas is unchanged in this process. This is an example of: A) Boyle's Law B) Charles's Law C) Avogadro's Law D) Dalton's Law 3. At constant temperature and volume, a sample of oxygen gas is added to a sample of nitrogen gas. The pressure of the mixture is found by adding the pressures of the two individual gases. This is an example of: A) Boyle's Law B) Charles's Law C) Avogadro's Law D) Dalton's Law 4. A sample of pure oxygen gas has a pressure of 795 torr. What is the pressure of the oxygen in units of atmospheres? A) 0.795 atm B) 1.05 atm C) 0.604 atm D) 0.760 atm E) 1.01 atm 5. A small bubble rises from the bottom of a lake, where the temperature and pressure are 4°C and 3.0 atm, to the water's surface, where the temperature is 25°C and the pressure is 0.95 atm. Calculate the final volume of the bubble if its initial volume was 2.1 mL. A) 0.72 mL B) 6.2 mL C) 7.1 mL D) 22.4 mL E) 41.4 mL 6. The temperature of a sample of argon gas in a 365 mL container at 740. mmHg and 25°C is lowered to 12°C. Assuming the volume of the container and the amount of gas is unchanged, calculate the new pressure of the argon. A) 0.468 atm B) 0.931 atm C) 1.02 atm D) 1.54 atm E) 2.03 atm 7. 0.820 mole of hydrogen gas has a volume of 2.00 L at a certain temperature and pressure. What is the volume of 0.125 mol of this gas at the same temperature and pressure? A) 0.0512 L B) 0.250 L C) 0.305 L D) 4.01 L E) 19.5 L 8. Calculate the density of CO2(g) at 120°C and 790 mmHg pressure. A) 0.032 g/L B) 1.4 g/L C) 1.8 g/L D) 3.4 g/L E) 8.0 g/L 9. Today is a beautiful day for a picnic in the mountains, so we seal our peanut butter sandwich in a plastic sandwich bag at the base of the mountain. The approximate volume of the sandwich bag not occupied by the sandwich is 200. mL. The pressure at the base of the mountain is 1.0 atm. If the pressure at the top of the mountain is 0.80 atm, what is the final volume (mL) of gas in our sandwich bag? 10. At STP, 1 mole of gas has a molar volume of 22.4 L. What is the density (g/L) of oxygen at STP?