Предмет: Химия, автор: maksimka5657

Помогите!!! задание на фото!!! это 7 клас!

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Автор ответа: 6wgdxmzwkb

0

w(C)=1*12/16=0,75*100%=75%
w(H)=4*1/16=0,25*100%=25%

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