Combined Gas Law Problems 1) A sample of sulfur dioxide occupies a volume of 652 mL at 40. C and 720 mm Hg. What volume will the sulfur dioxide occupy at STP? 2) A sample of argon has a volume of 5.0 dm' and the pressure is 0.92 atm. If the final temperature is 30. C, the final volume is 5.7 L, and the final pressure is 800. mm Hg, what was the initial temperature of the argon? 3) 322 L of hydrogen occupies a volume of 197 L at STP. If the initial temperature of the hydrogen was 37 C, what was its initial pressure? 4) The initial temperature of a 1.00 liter sample of argon is 20. C. The pressure is decreased from 720 mm Hg to 360 mm Hg and the volume increases to 2.14 liters. What was the change in temperature of the argon? 5) A sample of nitrogen gas occupies a volume of 2.00 L at 756 mm Hg and 0.00 C. The volume increases by 2.00 L and the temperature decreases to 137 K. What is the final pressure exerted on the gas? 6) A 20. L container is filled with helium and the pressure is 150 atm and the temperature is 30.0 C. How many 5.0 L balloons can be filled when the temperature is 220 C and the atmospheric pressure is 755 mm