Suppose 10 atoms of carbon (C) react with 20 atoms of oxygen (O) to form 10 molecules of carbon dioxide ( CO2 ). According to the law of conservation of matter, how many atoms are present in this reaction?(1 point)Responses20203030101015
According to the law of conservation of matter, the number of atoms before and after a reaction should be the same.
In this reaction, 10 atoms of carbon (C) react with 20 atoms of oxygen (O) to form 10 molecules of carbon dioxide (CO2). Each carbon dioxide (CO2) molecule contains 1 carbon atom and 2 oxygen atoms.
So, the total number of carbon atoms in this reaction is 10 atoms.
The total number of oxygen atoms in this reaction is 2 atoms per carbon dioxide molecule, and since there are 10 carbon dioxide molecules, the total number of oxygen atoms is 2 x 10 = 20 atoms.
Therefore, the total number of atoms present in this reaction is 10 carbon atoms + 20 oxygen atoms = 30 atoms.
So, the correct answer is 30.