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Cm=n/V
n=0,02 x 0,22dm3
n=0,0044 mola
n=0,015 x 0,13dm3
n=0,00195 mola
0,0044+0,00195=0,00635 mola
130+220=350cm3=0,35dm3
Cm=0,00635/0,35
Cm=0,018 mol/dm3
2.
Cp=ms/mr x 100%
0,3=ms/40
ms=12g
0,12=ms/150
ms=18g
12+18=30g substancji
40+150=190g roztworu
Cp=30/190 x 100%
Cp=15,8%