1) S + O2 -> SO2
2) SO2 + H2O -> H2SO3
3) H2SO3 + ZnO -> ZnSO3 + H2O
C6H12+36CuO=18Cu2O+6CO2+6H2O
Ca3(PO4)2
c.o. Ca (+2)
c.o.(PO4) (-3)
M(Ca3(PO4)2)=310 г/моль<span>
w(Ca3)=120/310*100%=39%
w(P2)=62/310*100%=20%
w(O8)=100%-39%-20%=41%</span>
<span> n=310/24=13 моль</span>
3.3
4.3
5.4
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