Dry air is about 20.95 % oxygen by volume. assuming stp, how many oxygen molecules are in a 50.0 g sample of air? the density of air is 1.19 g/l

Given : Density of Air is 1.19 gram per liter

Given : Mass of Sample of Air = 50 grams

Given : Dry Air is about 20.95% Oxygen by Volume

At STP : 22.4 Liter of Oxygen contains 6.023 × 10²³ Molecules of O₂

answer: i would say b.

explanation:

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