Question

4 molecules of hydrogen (H2) react with 2 molecules of oxygen (O2) to produce some amount of water (H2O).

Complete the table below.
Chemical element Number of atoms in the reaction
-H -
-O -
During this reaction, how many molecules of water (H2O) are produced?

Answer 1

2H2+ 02-->2H20

So 4H2 + 202-->4H20

so the answer is 4 water molecules.