v=500cm3d=1,09g/cm3m=v*dm=500*1,09m = 545gmr=545gCp=8%ms=Cp*mr/100%ms=8*545/100ms = 43,6g Na2S
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v=500cm3
d=1,09g/cm3
m=v*d
m=500*1,09
m = 545g
mr=545g
Cp=8%
ms=Cp*mr/100%
ms=8*545/100
ms = 43,6g Na2S