Предмет: Химия, автор: Сергей2013

яка масова частка елемента оксигену в речовині CO2

Ответы

Автор ответа: XenoOn

M(CO2)=12+32=44

w(O)=32/44*100=73%

Автор ответа: SeriousSam

C+O2

12+2*16=44

3244=811≈0,72

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