Предмет: Химия, автор: konstantinkolubaev

У наслідок нагрівання 272 г гідроген пероксиду (Н2О2) виділилось 128 г кисню (О2) і утворилася вода. Розрахуйте і запишить масу води, яка утрилася. У відповіді вкажіть число без одиниць вимірювання.

Ответы

Автор ответа: dyexfnf

0

Ответ: 144

Объяснение:

Згідно закон збереження маси речовин маємо:

m(H2O2) = m(H2O) + m(O2)

m(H2O) = m(H2O2) - m(O2) = 272 - 128 = 144 г

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