Question- An aqueous solution of copper sulfate was found to have an absorbance of 0.168 at 265 nm when measured in a cuvette with a path-length of 0.500cm. If the absorptivity of the transition is 11.5m^2/mol what is the copper concentration in
1) M(mol/L?
2) Parts per million(mg/L)
Pay attention molar mass of Cu=63.55g/mol)
Please define why you think that's the right answer