How do you balance these two chemical equations?

Question

1) N2 + H2 ---------> NH3
2) Al + CuSO4 --------> Al2(SO4)3 + Cu

Answer 1

1) N2 + 3H2----------->2NH3
2) 2Al + 3CuSO4-------->Al2(SO4)3 + 3Cu


hope this helps

Answer 2

To balance the equation, you need to have the same number of atoms of each element on both sides, even if on one side they're inside molecules.
So, the first equation as stated has 2 nitrogens and 2 hydrogens on one side and 1 nitrogen and 3 hydrogens on the other. To make it even, put a 2 in front of the NH3 molecule [resulting in 2 nitrogens and 6 hydrogens] and put a and a 3 in front of the H2 atom [again resulting in 2 nitrogens and 6 hydrogens].

Use same concept for second equation...good luck and have fun.