Предмет: Химия, автор: oldschoolshik

Какое кол-во вещества оксида кальция имеет массу 560 грамм.
Напишите все по действиям прошу

Ответы

Автор ответа: Platinum15

1) С помощью таблицы Менделеева находим молярную массу CaO:
M(CaO) = 40 + 16 = 56 г/моль
2) находим количество вещества по формуле
n = m/M - масса делить на молярную массу
n(CaO) = 560/56 = 10 моль

Автор ответа: oldschoolshik

Спасибо большое ) Добра вам

Автор ответа: Platinum15

и Вам)))

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