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ms=75g
mr = ms+ mw
Cp= ms/ mr = 75/575 x 100%
Cp = 13%
412. mw= 250g
ms= 25g
Cp= 25/ 275 x 100% = 9%
413.
v=200 cm3
d= 0.8
d=m/v -> m= d v
m= 160g = masa rozpuszczalnika (jak dodamy 40 g substancji to się zwiększy o 40)
ms= 40g
Cp = 40/200 *100 = 20%
415.
KHCO3 - 100g.
200 moli H2O = 3600g
Cp= 100/100+3600 *100 = 2.7%
416. glukoza c6h12o6 - masa= 196g - 1 mol
150 moli H2O = 2700g
ms = 196g
mr= 196+ 2700
Cp= 196/2896 x 100% = 6.8%