W ca3(po4)2=120+(31+64)*2=310
W(ca3)=120/310*100%= 39%
W(p)=31*2/310*100%=20%
W(o4)=64*2/310*100%=41%
W ca3(po4)2=120+(31+64)*2=310
W(ca3)=120/310*100%= 39%
W(p)=31*2/310*100%=20%
W(o4)=64*2/310*100%=41%