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dCl2= 3.2g/dm^3
VCl2= 2.3dm^3
VH2O= 1dm^3
d=m/v
m=d*v m=3.2g/dm^3*2.3dm^3= 7.36g Cl2
m = 1000g/dm^3*1dm^3= 1000g H2O
mr= 1000g + 7.36g = 1007.36g
Cp= 7.36g*100% /1007.36g = 0.73%
stężenie chloru wynosi 0.73%.