3H2+2AL-->2ALH3
C+2S-->CS2
Pb+O2-->PbO2
Zn+Br2-->ZnBr2
C+2F2-->CF4
2Fe+O2-->2FeO
CL2+2O2-->2CLO2
4Cu+O2-->2Cu2O
2Au+3CL2-->2AuCL3
дано
P2O5
W(P) - ?
W(O) - ?
M(P2O5) = 31*2+16*5 = 142 g/mol
W(P) = 31*2 / 142 *100% = 43.66 %
W(O) = 16*5 / 142 * 100% = 56.34%
Объяснение:
3H2+2AL-->2ALH3
C+2S-->CS2
Pb+O2-->PbO2
Zn+Br2-->ZnBr2
C+2F2-->CF4
2Fe+O2-->2FeO
CL2+2O2-->2CLO2
4Cu+O2-->2Cu2O
2Au+3CL2-->2AuCL3
дано
P2O5
W(P) - ?
W(O) - ?
M(P2O5) = 31*2+16*5 = 142 g/mol
W(P) = 31*2 / 142 *100% = 43.66 %
W(O) = 16*5 / 142 * 100% = 56.34%
Объяснение: