3. Stoichiometry
Formula Determination — Quiz
Test your understanding of formula determination with 5 practice questions.
Practice Questions
Question 1
A compound is found to contain 28.2% nitrogen and 71.8% oxygen by mass. What is the empirical formula of this compound?
Question 2
A compound is determined to contain 40.0% calcium, 12.0% carbon, and 48.0% oxygen by mass. What is the empirical formula of this compound?
Question 3
A compound has the empirical formula CH2 and a molar mass of approximately 84 g/mol. What is the molecular formula of the compound?
Question 4
A compound contains 94.1% oxygen and 5.9% hydrogen by mass. What is the empirical formula of the compound?
Question 5
A compound is found to contain 46.7% nitrogen and 53.3% oxygen by mass. What is the empirical formula of this compound?