25. A compound contains 40% calcium, 12% carbon, and 48% orygen by mass. What is the empincal formula of this compound? CaCO_(2) CaC_(2)O_(4) CaCO_(3) CaC_(3)O_(6)

To determine the empirical formula of the compound, we need to convert the given percentages into moles and find the simplest whole number ratio of the elements.1. **Convert percentages to grams**: Assume we have 100 grams of the compound. This means we have: - 40 grams of calcium (Ca) - 12 grams of carbon (C) - 48 grams of oxygen (O)2. **Convert grams to moles**: - Moles of Ca = - Moles of C = - Moles of O = 3. **Find the simplest whole number ratio**: - Divide each by the smallest number of moles calculated: - Ca: - C: - O: The simplest whole number ratio is approximately 1:1:3 for Ca:C:O.Therefore, the empirical formula of the compound is .