какое количество веществ содержится na2s массой 234 - №26525973

какое количество веществ содержится na2s массой 234
- Предмет:
  Химия
- Автор:
  pooky
- 5 лет назад

Ответы 1

M(Na2S)=78г/мольm(Na2S)=234гn(Na2S)=M/m=234/78=3моль
- Автор:
  kim
- 5 лет назад
- 0
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