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Introductory Physics Homework Help
Finding nitrogen weight in air
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[QUOTE="atim, post: 6012031, member: 647103"] [h2]Homework Statement [/h2] Air consists of approximately 78% Nitrogen in volume, 21% Oxygen and 1% Argon. The atomic weight of Nitrogen is approximately 14, that of Oxygen 16, and that of Argon 40. Nitrogen occupies air in weight by (1) (a) 76% (b) 77% (c)78% (d)79% [h2]Homework Equations[/h2][h2]The Attempt at a Solution[/h2] I don't know how to calculate, so I just tried 78*28 + 21*32 + 40 = 2896 78*28/2896 = 0.754 = 75.4% what is the correct method? [/QUOTE]
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Introductory Physics Homework Help
Finding nitrogen weight in air
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