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Ответ

Ответ дан
JeniferDorsey

Ответ:

8,854г

Объяснение:

5 сразу делим на 100, чтобы не мучаться с процентами. Итого: 0,05.

м(сухая) 75*0,05=3,75г.

n(H2SO4)=3,75/98=0,038 моль.

соотношение: n(H2SO4)/n(BaSO4)=1/1

Значит: n(BaSO4)=0,038 моль.

m(BaSO4)= 0,038*233=8,854г.

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