Unformatted text preview: 293.22 Torr of the fluorocarbon and 427.22 Torr of the CHF 3 . What is the molar mass of the fluorocarbon? Suggest a molecular formula. Solution Approach We know that the mass of the displaced gas is equal to (Density times Volume). The balance point of the two gases occurs when: Which then suggests that , and since we can then write the following: For experiment 1, and , so that: For Experiment 2, and , so that: The second experiment is closer to zero pressure, which gives it more validity in terms of determining the molar mass, so that:...