Mixtures of helium and oxygen can be used in scuba diving tanks to help prevent "the bends." For a particular dive, 46L He at 25°C and 1.0 atm and 12L O2 at 25°C and 1.0 atm were pumped into a tank with a volume of 5.0L. Calculate: a. the partial pressure of He at 25°C b. the partial pressure of O2 at 25°C c. the total pressure in the tank at 25°C