Question Detail
Question
How many total atoms are present in a molecule of calcium carbonate (CaCO3)?
Correct Answer
Option C is the correct answer.
Detailed Explanation
The formula CaCO3 contains 1 calcium atom, 1 carbon atom, and 3 oxygen atoms. The total number of atoms is 1 + 1 + 3 = 5.
Hint
Add the subscripts for each element in the chemical formula.