Practice - The Mole Concept
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Practice Questions
Test your understanding with targeted questions
What is the definition of a mole?
💡 Hint: Think about how we count items in groups.
How many particles are in one mole?
💡 Hint: Remember the name Avogadro!
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the molar mass of water (H₂O)?
💡 Hint: Add numbers for hydrogen and oxygen together.
Avogadro's number is equal to how many particles in one mole?
💡 Hint: Recall what 1 mole represents.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Given the molar mass of sodium chloride is approximately 58.5 g/mol, how many grams are in 0.5 moles of NaCl?
💡 Hint: Use the formula: mass = moles × molar mass.
If you have 20 grams of carbon dioxide (CO₂), how many moles do you have? The molar mass of CO₂ is 44 g/mol.
💡 Hint: Rearrange the mass and molar mass relationship.
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Reference links
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