Answer:
A. CO₂
B. carbon dioxide
Explanation:
To determine the empirical formula of a compound, we need to follow a series of steps.
Step 1: Divide each mass percent by the atomic mass of the element
C: 27/12.01 = 2.25
O: 73/16.00 = 4.56
Step 2: Divide all the numbers by the smallest one, i.e., 2.25
C: 2.25/2.25 = 1
O: 4.56/2.25 ≈ 2
The empirical formula of the compound is CO₂. The name of this compound is carbon dioxide.
