Based on the following chemical equation how many molecules of Hydrogen (H) are present in the reactants side? 2H2 + O2 > 2H2O
Question 1 options:

1

2

3

4

2

Explanation:

Based on the chemical equation, the number of molecules of hydrogen gas in the reactant side is 2.

This is indicated by the coefficient before reactant.

A molecule is a covalent compound that has discrete or separate units.

So H₂ is made up of two atoms of hydrogen that has been covalently bonded together by sharing their valence electrons.

From the reaction expression:

   2 molecules of hydrogen gas combines with 1 molecule of oxygen gas to produce 2 molecules of water.