A solution of cupric sulphate is used at blood donor clinics to test donor blood for low iron. Calculate the concentration of this solution, in mol/L, if 125 g of CuSO4 crystals are dissolved in 1.0 L of water
c=n/V
n(CuSO4)=m/M=125/160=0.78mol
c=0.78/1=0.78mol/l
Answer: 0.78 mol/l
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