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M(j) = 15.5*2 = 31 г/моль
CO2 ==> C
89.6/22.4 = x/12
x = 48 г
H2O ==> 2H
180/18 = y/2
y = 20 г
m(N2) = 124 - 68 = 56 г
CxHyNz
12x = 48
y = 20
14z = 56
x = 4
y = 20
z = 4 | :4
x = 1
y = 5
z = 1
CH5N ==> CH3NH2 — метиламин