Respuesta :

9ca5r82

Answer:

C

Explanation:

Step 1:  Solve

We know water has the formula of H20,  if we have more molecules of water we don't touch the subscripts because that would change the substance so we can only add coefficients to the formula
I think the answer is C
Because the formula of water is H2O
So 4 H2O must probably mean 4 molecules of water