2006-11-19 16:22:28 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
N2: about 78%
O2: about 21%
Ar: about 0.9%
Misc.--includes CO2, nitrogen oxides, SO2, Xe, Kr, Ne, etc: about 0.1%
2006-11-19 17:18:12 · answer #1 · answered by pack_rat2 3 · 0⤊ 0⤋
Indeed, Nitrogen, oxygen, hydrogen (as water vapor), carbon (as carbon dioxide); make up the major components of air, techically these are compounds and not elements. Their formulas are; N2, O2, H2O, and CO2. helium, neon, xenon, krypton, and argon are elements (all noble gases).
Get an "A".
2006-11-20 12:53:53 · answer #2 · answered by teachr 5 · 0⤊ 0⤋
Nitrogen, 78%; oxygen, 21%, argon, 1%; hydrogen (as water vapor), varies; carbon (as carbon dioxide), less than 1%; plus trace amounts of helium, neon, xenon, and krypton.
2006-11-19 16:33:01 · answer #3 · answered by Anonymous · 0⤊ 1⤋
oxegen21% and nitrogen 79%
2006-11-19 16:25:48 · answer #4 · answered by worklessenjoylife 2 · 0⤊ 1⤋