2.50 g CuCl2 equals how many moles

• BrittleSkittle: the molar mass of CuCl2 is 134.45 g/mol; therefore, you divide 2.5 g of CuCl2 by 134.45 g of CuCl2 leaving you with 0.019 moles
• itemderby:

  Explanation:

  Number of moles is defined as the mass of substance given in grams divided by the molar mass of substance.

  It is given that mass of [tex]CuCl_{2}[/tex] is 2.50 g and molar mass of [tex]CuCl_{2}[/tex] is 134.45 g/mol.

  Therefore, calculate number of moles as follows.

        Number of moles of [tex]CuCl_{2} = \frac{mass}{molar mass}[/tex]

                                          = [tex]\frac{2.50 g}{134.45 g/mol}[/tex]

                                           = 0.0186 mol

                                           = 0.019 mol (approx)

  Thus, we can conclude that 2.50 g CuCl2 equals 0.019 moles (approx).