Odpowiedzi

2009-11-22T14:42:46+01:00

ms= C%/100% * mr
ms= 5%/100% * 80g
ms=4g
mrozp. = 76g


po dodaniu 20 g wody
ms= 4g
mrozp. = 76g+ 20g= 96 g
mr= 100g
%C= 4g/100g*100%
%C=4%