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

10C + 10O2 ==> 10CO2

10C + 20 O = 30 reacts and 10C + 20 O = 30 products

To find the total number of atoms present in this reaction, we need to understand the composition of a carbon dioxide molecule.

A carbon dioxide (CO2) molecule consists of one carbon atom (C) and two oxygen atoms (O). Therefore, for every molecule of carbon dioxide formed, we have one carbon atom and two oxygen atoms.

Given that 10 molecules of carbon dioxide are formed, we can multiply the number of molecules by the number of atoms in each molecule to find the total number of atoms.

Number of carbon atoms = Number of carbon dioxide molecules = 10 molecules
Number of oxygen atoms = Number of carbon dioxide molecules × Number of oxygen atoms per molecule = 10 molecules × 2 atoms per molecule = 20 atoms

So, in this reaction, there are 10 carbon atoms and 20 oxygen atoms, resulting in a total of 30 atoms.

According to the law of conservation of matter, the total number of atoms before and after a chemical reaction remains the same.

In this reaction, 10 atoms of carbon react with 20 atoms of oxygen to form carbon dioxide (CO2). Each molecule of CO2 contains 1 atom of carbon and 2 atoms of oxygen.

Since 10 molecules of CO2 are formed, the total number of atoms in the product (CO2) is:
10 molecules x (1 atom of carbon + 2 atoms of oxygen) = 10 atoms of carbon + 20 atoms of oxygen = 30 atoms in total.

Therefore, there are 30 atoms present in this reaction.