Onboard a starship, a demented alien creature releases a mixture of ideal gases made up of 4.00 lbm of molecular oxygen (O2) and 6 lbm of an unknown and possibly toxic gas. Before the gas mixture was released, you noticed that its original container had a volume of 10.0 ft3 , and at 150.°F, it had a pressure of 114.3 psia. Because you are a line officer engineer, the captain asks you for your assessment of the situation. Is the gas lethal? To draw a proper conclusion, you must determine
a. The molecular mass of the unknown gas.
b. The probable name of this gas.
c. The volume fraction of each gas present in the mixture.