Do 190 gramów roztworu soli o stężeniu 5% dosypano 10g soli. Oblicz stężenie otrzymanego roztworu.
/obliczenia/ potrzebne na już.. :(
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mr1 = 190g
Cp1 = 5%
Cp2 = ?
Cp = ms/mr x 100%
ms = Cp x mr/100%
ms1 = 5% x 190g/100% = 9,5g
ms2 = 9,5g + 10g = 19,5g
mr2 = 190g + 10g = 200g
Cp2 = 19,5g/200g x 100% = 9,75%