Question

From the balanced chemical equations listed below, which equation best expresses the following word equation: Hydrogen gas plus oxygen gas yields water vapor plus energy?

2H2O (g) arrow 2H2 (g) + O2 (g) + energy

2H + O arrow 2HO + energy

2H2 (g) + O2 (g) arrow 2H2O (g) + energy

2H2 (g) + O2 (g) + energy arrow 2H2O (l)

Answer 1

@welshfella

Answer 2

Which do you think?

Answer 3

Im not sure @matt101

Answer 4

So you're looking for the equation that displays hydrogen in a gaseous state and oxygen in a gaseous state as reactants

Which form H2O(water) as a vapor (gaseous state) as well energy on the products side.

With that information you can probably figure out what the right answer is.

Answer 5

water vapour = H2O (g)