Do 60g 12 % roztworu dolano 20g H2O.Oblicz stezenie procentowe roztworu.
100g - 12%
60g - x
x = 7,2g
60g + 7,2g = 67,2g
7,2g+7,2g = 14,4g
74,4g - 14,4g
100g - x
x =
Odp. Stężenie procentowe wynosi 19%
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100g - 12%
60g - x
x = 7,2g
60g + 7,2g = 67,2g
7,2g+7,2g = 14,4g
74,4g - 14,4g
100g - x
x =
Odp. Stężenie procentowe wynosi 19%