cp=15%
ms=75g
mr=?
Korzystamy z wzoru :
cp=(ms/mr)·100%
15%=(75g/mr)·100%
15/100=75g/mr
15mr=75g·100 |:15
mr=500g
500g-75g=425g - ilość wody w roztworze
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cp=15%
ms=75g
mr=?
Korzystamy z wzoru :
cp=(ms/mr)·100%
15%=(75g/mr)·100%
15/100=75g/mr
15mr=75g·100 |:15
mr=500g
500g-75g=425g - ilość wody w roztworze