1.1 - Review of Moles and Molar Mass
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Practice Questions
Test your understanding with targeted questions
What is Avogadro's constant?
💡 Hint: Think of how many atoms are in one mole of carbon.
How is molar mass derived for elements?
💡 Hint: Look at how the periodic table lists atomic masses.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the molar mass of water (H₂O)?
💡 Hint: Check the values of Hydrogen and Oxygen from the periodic table.
Avogadro's constant is approximately equal to:
💡 Hint: Remember what a mole represents.
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Challenge Problems
Push your limits with advanced challenges
You need to produce 2 moles of water from H₂ + O₂, but you start with 1 mole of H₂ and 1 mole of O₂. How many moles of water can you actually produce?
💡 Hint: Calculate the ratio required for complete reaction.
Given a 100 g sample containing 40% carbon, what is the mass of carbon in the sample? Additionally, what is the number of moles of carbon?
💡 Hint: Take 40% of 100 g to find mass first, then use molar mass to find moles.
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