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)
Responses
10
10
30
30
20
20
15
15
The correct answer is 30.
To determine the number of atoms present in the reaction, we need to calculate the total number of atoms for each element before and after the reaction.
Before the reaction:
10 atoms of carbon (C) + 20 atoms of oxygen (O) = 30 atoms in total
After the reaction:
10 molecules of carbon dioxide (CO2) consist of:
- 10 atoms of carbon (C)
- 20 atoms of oxygen (O)
So, after the reaction, there are 10 atoms of carbon and 20 atoms of oxygen.
Final answer: 10 atoms of carbon and 20 atoms of oxygen.