Question

вычислите массовую долю элемента
СаО ,CO₂

Answer 1

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%