Practice - Molecular Mass and Formula Unit Mass
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Practice Questions
Test your understanding with targeted questions
Calculate the molecular mass of carbon dioxide (CO₂).
💡 Hint: Remember to multiply the atomic mass of oxygen by its number of atoms.
What is the formula unit mass of magnesium oxide (MgO)?
💡 Hint: Add the atomic masses of magnesium and oxygen.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the molecular mass of H₂O?
💡 Hint: Think about how many atoms of each element are present.
Formula unit mass is relevant for which type of compounds?
💡 Hint: Recall the distinction between types of chemical compounds.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Calculate the molecular mass of a compound containing 5 carbon atoms, 10 hydrogen atoms, and 2 oxygen atoms.
💡 Hint: Use the atomic masses provided in your textbook.
An ionic compound contains 2 calcium ions (Ca²⁺, 40) and 3 oxide ions (O²⁻, 16). Calculate the formula unit mass.
💡 Hint: Add together the contributions from calcium and oxide ions.
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