17) A 8.10 L container holds a mixture of twogases at 21 °C. The partial pressures of gas A and gas B,respectively, are 0.369 atm and 0.755 atm. If 0.120 mol of a thirdgas is added with no change in volume or temperature, what will thetotal pressure become?
18) A gas mixture is made by combining 8.0 geach of Ar, Ne, and an unknown diatomic gas. At STP, the mixtureoccupies a volume of 18.97 L. What is the molar mass of the unknowngas?
24) At a certain temperature and pressure, 1 Lof CO2 gas weighs 2.05 g. What is the mass of 1 L of CO gas at thesame temperature and pressure?
