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mr1 = 120g
ms1 = 0,05 * 120g = 6g
mw1 = mr1 - ms1 = 120g - 6g = 114g
Cp2 = ?
mr2 = 120g + 10g = 130g
ms2 = 6g + 10g = 16g
mw2 = 114g
Cp2 = 16g * 100% / 130g
Cp2 = 1600% / 130
Cp2 ≈ 12,3%
Odp. Stężenie procentowe otrzymanego roztworu wynosi 12,3%.