Question

When electricity flows through water, the water molecules split into molecules of hydrogen and oxygen gas. How many oxygen (O2) molecules are produced from the splitting of two molecules of water (H2O) if the balanced equation for the reaction is as follows? 2H2O 2H2 + O2 A. 4 B. 3 C. 2 D. 1

Answer 1

The  number  of  O2 ( oxygen)   molecules  that are produced  from splitting of two molecules  of water is 1  molecule  of oxygen ( answer D)

Explanation

A molecule   -  is a group of two or more  atoms  held together  by a chemical bond.

In  the  reaction of splitting  of  2   molecules  of  H2O  yield 1  molecule  of O2.

• 1  molecule of O2  is made up  of two atoms of  Oxygen  held  by  double  covalent bond.  

• The two  oxygen atom  form molecule  by sharing  two valence electrons.