Odpowiedzi

2009-11-03T18:42:40+01:00
C% = 45%
Vr = 1dm³=1000cm³
d = 0,9 g/cm³

C% = ms x mr / 100%
d = m/ V

mr = o,9 x 1000 = 900 [g]
ms = C% x mr /100%
ms = 45 x 900 / 100 = 405 [g]

mH₂O = mr - ms
mH₂O = 900 - 405 = 495 [g]
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