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Автор - mocosincas

найдите массу и объем (н.у) 18x10^26 молекул кислорода

Ответ

Проверено экспертом

Автор - Alexei78

дано

N(O2) = 18x10^26 молекул

--------------------------------

m(O2)-?

V(O2)-?

N(A) = 6.02*10^23 молекул

M(O2) = 32g/mol

m(O2) = M(O2) * N(O2) / N(A) = 32*18*10^26 / 6.02*10^23 = 96000 g

Vm = 22.4 L/mol

V(O2) = Vm * N(O2) / N(A) = 22.4 *18*10^26  / 6.02*10^23=67200 L

ответ 96 кг, 67.2 м3

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