Предмет: Химия, автор: rhei9eew

ПОМОГИТЕ ОЧЕНЬ СРОЧНО ПРОШУ ВАС ДАЮ 40 БАЛЛОВ И ЛУЧШИЙ ОТВЕТ!! ПРОШУ ВАС!

Приложения:

Ответы

Автор ответа: ritagerasimova2093

Ответ:

71% и 29%

Объяснение:

CaO

M(CaO) = 40 + 16 = 56

w(Ca) = 40/56 = 0.71 или 71%

w(O) = 16 / 56 = 0.28 или 29%

rhei9eew: Спасибо!!!!

ritagerasimova2093: Пожалуйста

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