PLease answer this

Question

You are asked to balance the chemical equation H₂ + O₂ → H₂O. How many of the following ways are correct ways to balance this equation?

I. 2H₂ + O₂ → 2H₂O

II. H₂ + O₂ → H₂O

III. 4H₂ + 2O₂ → 4H₂O

IV. H₂ + O₂ → H₂O₂

a.3

b.1

c.0

d.4

e.2

Answer 1

Balance H2 + O2 ==> H2O

I. 2H₂ + O₂ → 2H₂O ... CORRECT

II. H₂ + O₂ → H₂O ... INCORRECT

III. 4H₂ + 2O₂ → 4H₂O ... CORRECT BUT UNCONVENTIONAL

IV. H₂ + O₂ → H₂O₂ ... INCORRECT

So, you'll probably want to opt for choice (e)