HOW DO I DO THIS PLEASE HELP I AM CRYING

here's the set up for the right side

              BaSO4     +      HCl

Ba                1                     0

Cl                 0                    1

H                  0                    1

S                   1                    0

O                  4                    0

Explanation:

You only have to answer whats in the chemical compound so since there is no hydrogen in BaSO4, you can put 0 or leave it blank :)

it's c. elements are placed in rows based on how may valencies electrons have.