Which equation is set up correctly to determine the volume of a 3.2 mole sample of oxygen gas at 50°c and 101.325 kpa? a. `"v" = (("3.2 mol")("8.314 l" * "kpa/k" * "mol")("323 k"))/("101.325 kpa")` b. `"v" = (("3.2 mol")("8.314 l" * "kpa/k" * "mol")("50"^@"c"))/("1 atm")` c. `"v" = (("8.314 l" * "kpa/k" * "mol")("50"^@"c"))/(("3.2 mol")("101.325 kpa"))` d. `"v" = (("3.2 mol")("8.314 l" * "kpa/k" * "mol"))/(("1 atm")("323 k"))`