Na3PO4
n(P)=n(Na3PO4)=4.515*10^23/6.02*10^23=0.75моль
n(Na3PO4 чистого)=n(P)=0.75 моль
n(Na3PO4 с примесями)=0.75+0.75*0.08=0.81 моль
m(Na3PO4)=0.4*164=65.6г
1 <span>Na2CO3+2HCL=2NaCl+H2O+CO2</span>
2H2S+3O2=2SO2+2H2O
2SO2+O2=2SO3
SO3+H2O=H2SO4
H2SO4+CuO=CuSO4+H2O
CuSO4+BaCI2=BaSO4+CuCI2
2K+2H2O = 2KOH+H2
2KOH+H2CO3 = K2CO3+2H2O
K2CO3+2NaNO3 = 2KNO3+Na2CO3
2KNO3 = 2KNO2+O2
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