Unit 9: The Gas Laws
Chemistry. Unit 9: The Gas Laws. The Atmosphere. an “ocean” of gases mixed together . Composition . ~78%. nitrogen (N 2 )………….. . ~21%. oxygen (O 2 )…………… . ~1%. argon (Ar)……………... . Trace amounts of:. carbon dioxide (CO 2 )… . ~0.04%. He, Ne, Rn, SO 2 , CH 4 , N x O x , etc. .
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