Question

When an evacuated glass bulb at 75.0 ml volume is filled with a gas at 25.3 degrees C and 747 mm Hg, the bulb gains 0.0114g. The gas is?
Use PV = nRT and solve for n.
Then n = grams/molar mass. Solve for molar mass. You can identify the gas from the periodic table. By the way, do you know the possibilities? There are not very many gases in the periodic table. H2, N2, O2, F2, Cl2, + noble gases.
the possibilities could be He F2 O2 N2 and NE the correct answer would be F2
I don't think the correct answer is F2.

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