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H2O = 18 g
18 * 10 = 180 g
Mcałk = 106g + 180g = 286 g
286g - 1 mol
28.6 - xmol
x= 28.6/286 = 0.1 mol
b)
28.6g - xg wody
286 - 180 g wody
x= 28.6 * 180 / 286
x= 18 g wody krystalizacyjnej.