Which is a correctly balanced equation for a reaction between hydrogen gas and oxygen gas?
A) 2 H2(g) + 2 O2(g) → H2O(g) + heat
B) H2(g) + O2(g) + 2 H2O(g) + heat
C H2(g) + O2(g) → H2O(g) + heat
D) 2 H2(g) + O2(g) + 2 H2O(g) + heat

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?  

Here is the link to the all information u need i mean answer key

Answers are 1,2,4 its correct on edgenuity.