Pre-Laboratory Assignment 1. The following data represent a determination of the "molar mass" of a sample of air by comparison with the mass of oxygen as the reference gas. Assuming the air is 79% nitrogen, 20% oxygen and 1% argon, and that these gases act as ideal gases, calculate both the experimental and theoretical "molar mass" of air. See Equation 4 in the Background section. Mass of evacuated syringe: 40.687g (Hint: For determining the theoretical molar mass of air, assume the percentages represent the mole fraction of each gas in the solution of air.) 2. A determination of the molar mass of methyl alcohol (CH3OH) yielded the following data. Using the data, fill in the rest of the table. Calculate the molar mass of methyl alcohol using Equation 3 and compare this value to the actual molar mass of methyl alcohol. The volume of the pipet is equal to the volume of water in the pipet. Use the relationship of mass and density to determine this volume. Once the volume of the pipet is determined, Equation 3 in the Background section can be used to calculate the molar mass of methyl alcohol