2)Ca3P2+6H2O=2PH3+3Ca(OH)2, M(Ca3P2)/m(Ca3P2)=2M(PH3)/m(PH3), m(PH3)=34/10=3,4г. 2PH3+4O2=P2O5+3H2O, 2M(PH3)/m(PH3)=M(P2O5)/m(P2O5), m(P2O5)=142/20=7,1г
2)Ca3P2+6H2O=2PH3+3Ca(OH)2,
M(Ca3P2)/m(Ca3P2)=2M(PH3)/m(PH3),
m(PH3)=34/10=3,4г.
2PH3+4O2=P2O5+3H2O,
2M(PH3)/m(PH3)=M(P2O5)/m(P2O5),
m(P2O5)=142/20=7,1г