Gas Formula Mr ρ0 . (0°C,po) d (Air=1) V0 Air (dry) n.a. 28,96 1,2928 1,000 22,40 Helium He 4,00260 0,1785 0,1381 22,42 Neon Ne 20.179 0,8999 0.6961 22,42
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