Question

Which equation is balanced?

Answer 1

`H_2 + O_2 = H_2O`

Here H is balanced but Obis unbalanced

So put 2 to H20 to balance O

`H_2 + O_2 = 2H_2O`

now H becomes unbalanced

So put 2 before H2

`2H_2 + O_2 = 2H_2O`

option a is correct

~Tulpe⚘