Odpowiedzi

2009-11-24T20:57:59+01:00
200g - 100%
x - 3%

x = 200 * 3 / 100%
x = 6g

200g - 6g = 194 substancja
2kg = 2000g = MW

Masa Roztworu
ms + mw = 194g + 2000g = 2194g
Cp = ms * 100% / mr
Cp = 194g * 100% / 2194g
Cp = 8,8%
6 2 6
2009-11-24T20:59:30+01:00
Mz=0,03*200g=6g
mzncl2= 200g-6g=194g
mw=2kg=2000g
mr= 2000g+200g=2200g
cp=194g*100%/2200g=8,81%
11 4 11
2009-11-24T21:01:33+01:00
200g -100%
x-3%

x=6g

cp=ms/mr*100%
cp=194/2200*100%
cp=~8,8%
3 1 3