It could be an algebraic expression that can simplified to: p2mv
A plain figure is a simple figure.
A solid figure.
figure math means figure math
our apprehension of the figure as got more exacting in definition, the figure as not changed but our understanding of it does, be it the correct or incorrect.
It's the same as adding the same figure without the minus figure. '+' minus '-' = '+'
Nitrogen (N2)780,840 ppmv (78.084%)Oxygen (O2)209,460 ppmv (20.946%)Argon (Ar)9,340 ppmv (0.9340%)Carbon dioxide (CO2)387 ppmv (0.0387%)Neon (Ne)18.18 ppmv (0.001818%)Helium (He)5.24 ppmv (0.000524%)Methane (CH4)1.79 ppmv (0.000179%)Krypton (Kr)1.14 ppmv (0.000114%)Hydrogen (H2)0.55 ppmv (0.000055%)Nitrous oxide (N2O)0.3 ppmv (0.00003%)Xenon (Xe)0.09 ppmv (9x10−6%)Ozone (O3)0.0 to 0.07 ppmv (0% to 7x10−6%)Nitrogen dioxide (NO2)0.02 ppmv (2x10−6%)Iodine (I)0.01 ppmv (1x10−6%)Carbon monoxide (CO)0.1 ppmvAmmonia (NH3)trace
For dry atmosphere:GasVolumeNitrogen (N2)780,840 ppmv (78.084%)Oxygen (O2)209,460 ppmv (20.946%)Argon (Ar)9,340 ppmv (0.9340%)Carbon dioxide(CO2)394.45 ppmv (0.039445%)Neon (Ne)18.18 ppmv (0.001818%)Helium (He)5.24 ppmv (0.000524%)Methane (CH4)1.79 ppmv (0.000179%)Krypton (Kr)1.14 ppmv (0.000114%)Hydrogen (H2)0.55 ppmv (0.000055%)Nitrous oxide(N2O)0.325 ppmv (0.0000325%)Carbon monoxide(CO)0.1 ppmv (0.00001%)Xenon (Xe)0.09 ppmv (9×10−6%) (0.000009%)Ozone (O3)0.0 to 0.07 ppmv (0 to 7×10−6%)Nitrogen dioxide (NO2)0.02 ppmv (2×10−6%) (0.000002%)Iodine (I2)0.01 ppmv (1×10−6%) (0.000001%)Ammonia (NH3)trace
ppmv: parts per million by volumeNitrogen (N2) 780,840 ppmv (78.084%)Oxygen (O2) 209,460 ppmv (20.946%)Argon (Ar) 9,340 ppmv (0.9340%)Carbon dioxide (CO2) 390 ppmv (0.039%)Neon (Ne) 18.18 ppmv (0.001818%)Helium (He) 5.24 ppmv (0.000524%)Methane (CH4) 1.79 ppmv (0.000179%)Krypton (Kr) 1.14 ppmv (0.000114%)Hydrogen (H2) 0.55 ppmv (0.000055%)Nitrous oxide (N2O) 0.3 ppmv (0.00003%)Carbon monoxide (CO) 0.1 ppmv (0.00001%)Xenon (Xe) 0.09 ppmv (9×10−6%) (0.000009%)Ozone (O3) 0.0 to 0.07 ppmv (0 to 7×10−6%)Nitrogen dioxide (NO2) 0.02 ppmv (2×10−6%) (0.000002%)Iodine (I2) 0.01 ppmv (1×10−6%) (0.000001%)Ammonia (NH3) traceNot included in above dry atmosphere:Water vapor (H2O) ~0.40% over full atmosphere, typically 1%-4% at surface
(Ar) Argon 9,340 ppmv (0.9340%)(Ne) Neon 18.18 ppmv (0.001818%)(He) Helium 5,24 ppmv (0.000524%)(Kr) Krypton 1,14 ppmv (0.000114%)(Xe) Xenon 0,09 ppmv (9×10−6%) (0.000009%)
Chemical composition of pure dry standard air:GasVolumeNitrogen (N2)780,840 ppmv (78.084%)Oxygen (O2)209,460 ppmv (20.946%)Argon (Ar)9,340 ppmv (0.9340%)Carbon dioxide(CO2)394.45 ppmv (0.039445%)Neon (Ne)18.18 ppmv (0.001818%)Helium (He)5.24 ppmv (0.000524%)Methane (CH4)1.79 ppmv (0.000179%)Krypton (Kr)1.14 ppmv (0.000114%)Hydrogen (H2)0.55 ppmv (0.000055%)Nitrous oxide(N2O)0.325 ppmv (0.0000325%)Carbon monoxide(CO)0.1 ppmv (0.00001%)Xenon (Xe)0.09 ppmv (9×10−6%) (0.000009%)Ozone (O3)0.0 to 0.07 ppmv (0 to 7×10−6%)Nitrogen dioxide (NO2)0.02 ppmv (2×10−6%) (0.000002%)Iodine (I2)0.01 ppmv (1×10−6%) (0.000001%)Ammonia (NH3)traceNot included in above dry atmosphere:Water vapor(H2O)~0.40% over full atmosphere, typically 1%-4% at surface
Atmospheric gases are the gases that make up the air of the earth's atmosphere. The atmosphere extends from the earth's surface to about 800 miles above the surface of the earth.A breakdown of the composition from Wikipedia:Nitrogen (N2)780,840 ppmv (78.084%)Oxygen (O2)209,460 ppmv (20.946%)Argon (Ar)9,340 ppmv (0.9340%)Carbon dioxide (CO2)390 ppmv (0.039%)Neon (Ne)18.18 ppmv (0.001818%)Helium (He)5.24 ppmv (0.000524%)Methane (CH4)1.79 ppmv (0.000179%)Krypton (Kr)1.14 ppmv (0.000114%)Hydrogen (H2)0.55 ppmv (0.000055%)Nitrous oxide (N2O)0.3 ppmv (0.00003%)Carbon monoxide (CO)0.1 ppmv (0.00001%)Xenon (Xe)0.09 ppmv (9 × 10−6%)Ozone (O3)0.0 to 0.07 ppmv (0% to 7 × 10−6%)Nitrogen dioxide (NO2)0.02 ppmv (2 × 10−6%)Iodine (I)0.01 ppmv (1 × 10−6%)Ammonia (NH3)traceNot included in above dry atmosphere:Water vapor (H2O)~0.40% over full atmosphere, typically 1%-4% at surface
Composition of dry atmosphere, by volume (the table is from Wikipedia)ppmv:parts per million by volume (note: volume fractionis equal to mole fraction for ideal gas only, seevolume (thermodynamics))GasVolumeNitrogen (N2)780,840 ppmv (78.084%)Oxygen (O2)209,460 ppmv (20.946%)Argon (Ar)9,340 ppmv (0.9340%)Carbon dioxide (CO2)394.45 ppmv (0.039445%)Neon (Ne)18.18 ppmv (0.001818%)Helium (He)5.24 ppmv (0.000524%)Methane (CH4)1.79 ppmv (0.000179%)Krypton (Kr)1.14 ppmv (0.000114%)Hydrogen (H2)0.55 ppmv (0.000055%)Nitrous oxide (N2O)0.325 ppmv (0.0000325%)Carbon monoxide (CO)0.1 ppmv (0.00001%)Xenon (Xe)0.09 ppmv (9×10−6%) (0.000009%)Ozone (O3)0.0 to 0.07 ppmv (0 to 7×10−6%)Nitrogen dioxide (NO2)0.02 ppmv (2×10−6%) (0.000002%)Iodine (I2)0.01 ppmv (1×10−6%) (0.000001%)Ammonia (NH3)traceNot included in above dry atmosphere:Water vapor (H2O) 0,04 %
To convert ppm mass basis to ppm volume basis: ppmm/molecular weight x 22.4 = ppmv
We find the inert gases argon (9,340 ppmv), neon (18.18 ppmv) and helium (5.24 ppmv) in the earth's atmosphere. Note that we use ppmv here to mean parts per million by volume. A link can be found below to check facts and learn more.
Earth's atmosphere is 78% nitrogen, 21% oxygen, and 0.934% argon. The remaining 0.066% (66/1000 of 1%) is made up of a combination of carbon dioxide, hydrogen, ozone, methane, carbon monoxide, helium, neon, krypton, and xenon etc.
Nirogen, N2, 780,840 ppmv (78.084%)
If you mean ppm it is parts per million, i.e. mg per litre