Find the thetrical formula for .012 mol of H20, .0056 moles of Cl2 and .0060 of copper with a formula like this CuCl*H20
*=point in center
Are these experimental data and is that Cl2 or Cl?
Divide everything by the smallest number and round to whole numbers. If that really is Cl2, that will be
CuCl2.2H2O. If you intended to write Cl, it is CuCl.2H2O