Предмет: Химия, автор: boringhuman90

Какая масса соответствует сернистой кислоте количеством вещества 2,5 моль:1) 142г 2) 205г 3) 147г

Ответы

Автор ответа: AstoriaBlack
2

Ответ:

2) 205 г

Объяснение:

Mr H₂SO₃ = 1*2 + 32 + 16*3 = 2 + 32 + 48 = 82 г/моль

m(H₂SO₃) = Mr(H₂SO₃) * n = 82 г/моль * 2,5 моль = 205 г

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