Suppose 10 atoms of carbon reacts with 20 atoms of oxygen to form 10 molecules of carbon dioxide, according to the law of conversation of the matter how many atoms are present in the reaction

1 answer

According to the law of conservation of matter, the number of atoms present before and after a chemical reaction should be the same.

In this reaction, we have 10 atoms of carbon and 20 atoms of oxygen reacting to form 10 molecules of carbon dioxide.

One molecule of carbon dioxide (CO2) contains one atom of carbon and two atoms of oxygen.

Therefore, the number of atoms present in the reaction is:
10 atoms of carbon + (10 molecules of CO2 x 1 atom of carbon per molecule) + (10 molecules of CO2 x 2 atoms of oxygen per molecule) = 10 + 10 + 20 = 40 atoms in total.