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stężenie procentowe Cp=9%
masa roztworu mr=30dag
korzystamy ze wzoru
Cp=ms / mr * 100%
Cp* mr= ms *100%
ms=Cp * mr / 10
ms=9%*30dag / 100%
0,09*30/100%=ms
ms=2,7dag
MR = 30 dag
Ms=?
Cp = (ms/mR)* 100%
Cp * MR / 100 = ms
9* 30dag / 100 = ms
ms = 2,7 dag
C% * mr = ms * 100% /100
C% * mr / 100 = ms
ms = 9 * 30 /100 = 270/100 = 2,7 grama