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Vw=10cm³
dw=1g/cm³
cp=?
-------------------------------
cp=ms*100%/mr
mr=mw+ms=1g+10g=11g
cp=1g*100%/11g=9,1%
mr=mw+ms=1g+10g=11g
Cp=1g×100%÷11g=9,1%