Question

What is the empirical formula of a compound containing 40% sulfur and 60% oxygen by mass?

• A. \( \text{SO}_3 \)
• B. \( \text{SO}_2 \)
• C. \( \text{S}_2\text{O}_3 \)
• D. \( \text{SO} \)

Hint:

Remember: To determine the empirical formula, convert the mass percentages of elements to moles, find the simplest ratio, and write the formula using whole numbers.