n(C12H22O11) = 0.8 mol
V(H2O) = 1 l = 1000 g (только для воды)
W(C12H22O11) - ?
m(C12H22O11) = 0.8 mol * 342 g / mol = 273.6 g
W(C12H22O11) = 273.6 g / ( 1000 + 273.6 ) g = 273.6 g / 1273.6 g = 0.2148 = 0.215 = 21.5%
Ответ: 21.5% (Б) .
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Answers & Comments
n(C12H22O11) = 0.8 mol
V(H2O) = 1 l = 1000 g (только для воды)
W(C12H22O11) - ?
m(C12H22O11) = 0.8 mol * 342 g / mol = 273.6 g
W(C12H22O11) = 273.6 g / ( 1000 + 273.6 ) g = 273.6 g / 1273.6 g = 0.2148 = 0.215 = 21.5%
Ответ: 21.5% (Б) .