Предмет: Химия, автор: gisdfuryhhrbibh

СРОЧНО Какая массовая доля кальция в CaCl2??? С РЕШЕНИЕМ

фтвфкещт20: 36%

Ответы

Автор ответа: фтвфкещт20

Ответ:

CaCl2

W(массовая доля)=Ar: Mr

Mr=Ar(Ca)+2•Ar(Cl)

Mr=40+71=111

Wr=40:111•100%=36%

ответ:36%

Автор ответа: bangtan11

CaCL2=40+35,5×2=111

Cl=35,5×2/111×100%=64

Ответ:64

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