Предмет: Химия, автор: kula0048

Обчисліть масу цинк гідроксиду, що утвориться під час взаємодії цинк нітрату масою 241,5 г з достатньою кiлькiстю лугу.​

Ответы

Автор ответа: dyexfnf
2

Ответ:

Объяснение:

  241,5 г                         x г

Zn(NO3)2 + 2KOH =  Zn(OH)2↓ + 2КNO3

n = 1 моль                    n = 1 моль

M = 189 г/моль           M = 99 г/моль

m = 189 г                     m = 99 г

m(Zn(OH)2 = 241,5 * 99 : 189 = 126,5 г

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