# Answer to Question #33466 in Other Chemistry for emily

Question #33466

If copper is heated in the presence of an excess of chlorine gas, how much metal is needed to make 12.20 g CuCl2?

Expert's answer

To solve this problem we must write the equation of chemical reaction:

Cu + Cl

Then suppose that x is mass of metal needed forreaction. The molar mass of Cu is 64; the molar mass of CuCl

So, we can find x:

x = (64*12.20)/135 = 5.78g

Cu + Cl

_{2}= CuCl_{2}Then suppose that x is mass of metal needed forreaction. The molar mass of Cu is 64; the molar mass of CuCl

_{2}is 135.So, we can find x:

x = (64*12.20)/135 = 5.78g

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