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Ответ

Ответ дан
msaleksyutina

Сколько молекул содержится в 11 г углекислого газа?

Дано:

m (CO2)=11г

Найти:

N (CO2)-?

N=Na×n n=m/M

M (CO2)= 12+32=44г/моль

n (CO2)= 11/44=0.25 моль

N (CO2)= 6.02×10^23×0.25=1.5×10^23 молекул

Ответ: N (CO2)=1.5×10^23 молекул

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