ile gramów siarczku sodu znajduje się w 0,5 dm3 roztworu 8% którego gęstość wynosi 1,09 g/cm3?
Vr= 0,5 dm3= 500 cm3
Cp= 8%
d= 1,09 g/cm3
Vr=mr/d
mr=Vr*d
mr=500*1,09
mr=545g
Cp=ms*100%/mr
ms=Cp*mr/100%
ms=8%*545g/100%
ms=43,6g
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Vr= 0,5 dm3= 500 cm3
Cp= 8%
d= 1,09 g/cm3
Vr=mr/d
mr=Vr*d
mr=500*1,09
mr=545g
Cp=ms*100%/mr
ms=Cp*mr/100%
ms=8%*545g/100%
ms=43,6g