Вычислите массовую долю элемента СаО ,CO₂
Mr(CaO)=40+16=56 W(Ca)=40*100%/56=71,43% W(O)=16*100%/56=28,57% Mr(CO2)=12+2*16=44 W(C)=12*100%/44=27,27% W(O)=32*100%/44=72,73%