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Ответ дан
maskejyt

Объяснение:

1) 22,4 - объем

2) Vm - 22.4

3)n=V/vm

4)22,4/22,4=1 моль

m=n*M

m=1 моль умножить на молярную массу ch4

m=1*12+(1*4)

m=16 g

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