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Calculati masa a:
a) 67,2 dm cubi (conditii normale) N 2;
b) 67,2 dm cubi in conditii normale NH3.


Răspuns :

a.m/masa molara= V/22,4 => masa/28=67,2/22,4=>masa=28*67,2/22,4=>masa=84
b. masa/masa molara=V/22,4=>masa/17=67,2/22,4=>masa=17*67,2/222,4=>masa=51