Vs = 2 l = 2000cm³ ms = 2000·1,225 = 2450g c = 20% ⇒ md = 490g
n = 490/40 = 12,25moli
+
V APA = 2 l mH2O = 2kg = 200g
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V final = 4 l ; n = 12,25 moli cM = 12,25/4 = 3,0625moli/l
ms final = 2450+ 2000 = 4450g md = 490g
c = 490·100/4450 = 11,011%