Chapter/Index: Introduction | A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
Appendix
Air
| Table 2350. Composition of air.
Material |
% by wt. |
% by vol. |
Partial pressure (Pa) |
Gas |
amu |
N2 |
28 |
75.51 |
78.1 |
7.9x104 |
O2 |
32 |
23.01 |
20.93 |
2.12x104 |
Ar |
40 |
1.29 |
0.93 |
9x102 |
CO2 |
44 |
0.04 |
0.03 |
31 |
Ne |
20 |
1.2x10-3 |
1.8x10-3 |
1.9 |
He |
4 |
7x10-5 |
7x10-5 |
0.53 |
CH4 |
16 |
2x10-4 |
2x10-4 |
0.2 |
Kr |
83 |
3x10-4 |
1.1x10-4 |
0.11 |
N2O |
44 |
6x10-4 |
5x10-5 |
0.05 |
H2 |
2 |
5x10-6 |
5x10-5 |
0.05 |
Xe |
131 |
4x10-5 |
8.7x10-6 |
0.009 |
O3 |
48 |
9x10-6 |
7x10-6 |
0.007 |
Water vapor at 50% RH, 20°C |
18 |
1.6 |
1.14 |
0.115 |
Hydrocarbon vapors |
|
|
|
Non-hydrocarbon vapors |
|
|
|
Organic particulates |
|
|
|
Inorganic particulates |
|
|
|
|
