Ile gramów soli znajduje się w 300g rotworu o stężeniu 5%?
Dane :
mr (masa roztworu) = 300g
C% (stęzenie) = 5%
ms (masa soli) = ?
C% = ms * 100% : mr /* mr
C% * mr = ms * 100% /:100%
ms = C% * mr : 100% = 5% * 300g : 100% = 15g soli
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Dane :
mr (masa roztworu) = 300g
C% (stęzenie) = 5%
ms (masa soli) = ?
C% = ms * 100% : mr /* mr
C% * mr = ms * 100% /:100%
ms = C% * mr : 100% = 5% * 300g : 100% = 15g soli