Odpowiedź:
mr=0,4kg= 400g
Cp= 5%
ms=?
ms= Cp*mr/100%= 5%*400g/100%=20g
ms=20g +25g=45g
mr=400g+25g=425g
Cp=ms*100%/mr= 45g*100%/425=10.6%
odp= Stężenie procentowe nowego roztworu wynosi 10,6%
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Odpowiedź:
mr=0,4kg= 400g
Cp= 5%
ms=?
ms= Cp*mr/100%= 5%*400g/100%=20g
ms=20g +25g=45g
mr=400g+25g=425g
Cp=ms*100%/mr= 45g*100%/425=10.6%
odp= Stężenie procentowe nowego roztworu wynosi 10,6%