Question

Ile wody zawiera 700g. 2% roztworu soli?

Answer 1

MH20=?
Cp = 2%
mr=700g

ms=mr*Cp:100&
ms=700g*2%:100%
ms=1400g:100%
ms=14g

mH2O=mr - ms
mH2O=700g-14g=686g

Answer 2

Cp=2%
mr=700g
ms=?

Cp=ms/mr * 100% /*mr
Cp*mr=ms*100% /:100%
ms=Cp*mr/100%

ms=2%*700g/100%
ms=14g

mH2O=mr-ms
mH2O700g-14g
mH2O=686g