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ms - masa substancji
Cp - stezenie procentowe
Cp = 20g / 180g + 20g * 100%
Cp = 20/200 * 100%
Cp = 1/10 * 100%
Cp = 10 %
C% = (ms * 100 %) / mr
masa roztworu to masa substancji ( chlorowodoru) i wody.
zatem:
C% = ?
ms = 20g
mr = 200 g
C% = (20 * 100) / 200
C% = 10 %
;)
mr = 20g + 180g = 200g
Cp = ms/mr ×100%
Cp = 20/200 ×100%
Cp = 10%
stężenie procentowe wynosi 10%