Предмет: Химия, автор: anyapolap

Вычислите по термохимическому уравнению 4 P(к) + 5O2(г) =2 P2O5(к) + 3610 кДж
количество теплоты, выделяемой при сгорании 55 г фосфора.

Ответы

Автор ответа: NeMoguPridumatNick
3

Ответ:

4 P(к) + 5O2(г) =2 P2O5(к) + 3610 кДж

Вычесляем с помощью пропорций

55-Х

124-3610

55*3160 и делим все на 124

Ответ:

1601,209

Тут 124 это Mr фосфора(31*4)

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