Предмет: Химия, автор: ggrom9849

Срочно!!! Пожалуйста помогите найти массовую долю (W) каждого элемента в соединениях:
Al(CNO3)3 , CuSO4​

Ответы

Автор ответа: antoneko
1

Mr(Al(NO3)3) = 27 + 14*3 + 16*3*3 = 213

w(Al) = 27/213 = 0,127 = 12,7%

w(N) = 14*3/213 = 0,197 = 19,7%

w(O) = 16*3*3/213 = 0,676 = 67,6%

Mr(CuSO4) = 64 + 32 + 16*4 = 160

w(Cu) = 64/160 = 0,4 = 40%

w(S) = 32/160 = 0,2 = 20%

w(O) = 16*4/160 = 0,4 = 40%

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