what element comprises most of the earths atmosphere?

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what element comprises most of the earths atmosphere?

2007-04-19 16:56:17 · 4 answers · asked by Bob B 1 in Science & Mathematics ➔ Chemistry

4 answers

Nitrogen (N2) 780,840 ppmv (78.084%)
Oxygen (O2) 209,460 ppmv (20.946%)
Argon (Ar) 9,340 ppmv (0.9340%)
Carbon dioxide (CO2) 383 ppmv (0.0383%)
Neon (Ne) 18.18 ppmv
Helium (He) 5.24 ppmv
Methane (CH4) 1.745 ppmv
Krypton (Kr) 1.14 ppmv
Hydrogen (H2) 0.55 ppmv

2007-04-19 17:02:41 · answer #1 · answered by sfpiano 4 · 0⤊ 0⤋

Nitrogen gas

2007-04-19 17:22:33 · answer #2 · answered by Jerry P 6 · 0⤊ 0⤋

Nitrogen.

Doug

2007-04-19 16:59:35 · answer #3 · answered by doug_donaghue 7 · 1⤊ 0⤋

nitrogen

2007-04-20 00:14:31 · answer #4 · answered by Ms. Buckyball 3 · 0⤊ 0⤋