Odpowiedzi

2010-03-18T21:27:08+01:00
Cm=?
mh20= 200g
ms= 20g
d=1,4g/1cm3
mr= 200g+20g=220g

1,4g-1cm3
220g- x x=157cm3

M=56g/mol
56g-1mol
20g-x x=0,35mola

0,35mola- 157cm3
x- 1000cm3 x=2,2mola

Cm=2,2mol/dm3
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