Respuesta :

Thahir

The answer is 2

2H2 + O2 ---> 2H2O
Answer: 2

Balanced chemical equation:

2 H2 + O2 -> 2H2O

Left side:

4 H’s (2 x 2)
2 O’s (1 x 2)

Right side:

4 H’s (2 x 2)
2 O’s (2 x 1)

Therefore, left side equals to the right side.