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The problem asks to determine the empirical formulas for each compound given the percentage composition. To solve this, we'll follow these steps:

1. **Convert percentage composition to mass** assuming a 100 g sample (the percentage will equal the mass in grams).
2. **Convert mass to moles** by dividing each element's mass by its atomic mass (found in the periodic table).
3. **Find the mole ratio** by dividing the moles of each element by the smallest mole value obtained.
4. **Write

Determine the empirical formula for each compound given the percentage composition as shown below: a. 45% C and 55% O b. 26.7% C, 40.0% K, and 33.3% O c. 32.0% C, 14.7% N, 42.0% O, and the remainder H d. 31.9% K, 28.6% Cl, and the remainder O.

Learn how to determine empirical formulas from percentage compositions. This problem involves converting percentages to masses, converting masses to moles, finding mole ratios, and writing the empirical formula. Suitable for students in Grades 10-12.

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