W(Fe) = 70%
W(O) = 30%
Объяснение:
Mr(Fe2O3) = 56*2+16*3 = 160
W(Fe) = 56*2/160*100% = 70%
W(O) = 100%-70% = 30%
W(Fe) = 70%
W(O) = 30%
Объяснение:
Mr(Fe2O3) = 56*2+16*3 = 160
W(Fe) = 56*2/160*100% = 70%
W(O) = 100%-70% = 30%