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100g - 46g
56g - 1 mol
46g - x
x = 0,8 mola
<ro> = m/V
V = m/<ro>
V = 100g / 1,46g/cm3 = 68,5cm3 = 0,0685dm3
Cn = 0,8 mola / 0,0685dm3 = 11,7 mol/dm3
Odp. Stężenie molowe wynosi 11,7 mol/dm3