Air is approximately 80 mol % Nitrogen (M = 28kg/kmol) and 20 mol% Oxygen (M = 32kg/kmol). Consider a rigid container of volume 183.4 liters that contains air at P = 2 atm. Throughout this problem, the temperature of the container is maintained fixed and equal to 25 °C. Use the ideal gas law to answer the following questions (R = 0.082 m³.atm/kmol.K): A certain amount of Hydrogen (M = 2 kg/kmol) is added to the container such that the pressure becomes equal to 2.6 atm. Determine the mass of Hydrogen added. O2g 49 7 g 9 g

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