Дано
V(CL2)= 7.47 L
W(CL2) = 1%
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m(H2O)-?
m(CL2) = M(CL2)*V(CL2) / Vm , M(CL2)= 35.5*2 = 71g/mol , Vm=22.4 L/mol
m(CL2) = 71*7.47 / 22.4 = 23.68 g
W(CL2) = m(CL2) / (m(CL2)+m(H2O) )*100%
1% = 23.68 / ( 23.68 + m(H2O)) * 100%
1*(23.68 + m(H2O) ) = 23.68*100
m(H2O) = 2344.32g
ответ 2344.32 г воды