Problems. to receive full credit, you must show all your work (gas law constamt r-00821 atm/mol k or 62.4 l torr/mol k) 1. (10 points) a sample of nitrogen gas occupies a volume of 8 50 l. at 0.980 atm. what volume does the gas occupy if the pressure is increased to 1.30 atm? 2. (10 points) a helium sample at 25 c has a volume of 1.82 l. if the pressure and amount of helium remain unchanged what will the volume of the gas be at 50°c? (10 points) a 0.85 mol of a gas has a volume of 758 torr and a volume of 21.0l. what will the volume be if the amount is increased to 1.00 mol and the pressure remains 3. unchanged?