3Mg +2P= Mg3P2 n(Mg3P2)= m/M=33.5/134=0.25 моль 2n(Mg3P2)=n(P) n(P)= 0.5 моль m(P)= n Х М= 0.5 Х31= 15.5г
3Mg +2P= Mg3P2
n(Mg3P2)= m/M=33.5/134=0.25 моль
2n(Mg3P2)=n(P)
n(P)= 0.5 моль
m(P)= n Х М= 0.5 Х31= 15.5г