Combined Gas Law 1. A 7.00 L sample of argon gas at 420. K exerts a pressure of 625 kPa. If the gas is compressed to 1.25 L and the temperature is lowered to 350. K, what will be a new pressure?

2. A helium balloon with a volume of 3.00 L, a pressure of 100. kPa, and a temperature of 295 K is put into an environment where the pressure is 50.0 kPa and the temperature is 250 K. What is the new volume of the balloon?

3. A sample of nitrogen gas occupies 25.0 L at 800. K and 485 kPa. What is the volume of the gas at a temperature of 273 and 101kPa?