Oblicz, ile należy użyć wody i MgCl do sporządzenia 350g 10% roztworu.
mr= 350g cp=10% cp=ms/mr * 100% => ms= Cp * mr/100% ms= 350*10%/100%=35g mw=350-35=315g
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mr= 350g
cp=10%
cp=ms/mr * 100% => ms= Cp * mr/100%
ms= 350*10%/100%=35g
mw=350-35=315g