Помогите решить химию Ca3 (P O4)2 w (Ca)-? w (P)-? w (O)-?
M(Ca3 (PO4)2)=40*3+ 31*2+ 16*8=120+62+128=310 W(Ca)= 120/310*100%=38.7% W(P)= 62/310*100%=20% W(O)=128/310*100%=41.3%