Ответ: W(Ca)=51%
W(F)=49%
Объяснение: Ca F2 = 40+19×2=78
W (Ca) = 40:78=0,51=51%
W (F) = 38:78=0,49=49%
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Ответ: W(Ca)=51%
W(F)=49%
Объяснение: Ca F2 = 40+19×2=78
W (Ca) = 40:78=0,51=51%
W (F) = 38:78=0,49=49%