57 Experiment 3- Molar Mass of an Unknown Vapor Name___________________________ Report Sheet Partners________________________ ________________________________ Unknown #________Table 1. Molar mass data Trial 1 Trial 2 Trial 3 volume of Dumas bulb (mL) mass of bulb (grams) mass of bulb with unknown (grams) after recondensation mass of unknown (grams) average mass of unknown (grams) atmospheric pressure (mm Hg) molar mass of unknown (grams) Average molar mass of unknown Sample Calculations: 1. Show one example of how to calculate the molar mass of your unknown. 2. What is the standard deviation of your trials? 3.
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