Question

How do you balance this?
Al + CuCl2 = AlCl3 + Cu
someone pleasee help.

Answer 1

Well I'd look at how many of each are on eachside of the equation:
Reactants ( Left Side)
1 Al
1 Cu
2 Cl

Products (Right Side)
1Al
1 Cu
3 Cl

So we have to balance the Cl first, do you know how to do that?

Answer 2

\[2 Al + 3 CuCl2 \rightarrow 2 AlCl3 + 3 Cu\]