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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is Avogadro's constant?
💡 Hint: Think about how many atoms are in a mole.
Question 2
Easy
Why do chemists use the mole?
💡 Hint: Consider the relationship between tiny atoms and larger samples.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
How many particles are in one mole of any substance?
- 6.022 per mole
- 6.022 × 10²³ per mole
- 12.01 per mole
💡 Hint: Think about how many items are in a dozen.
Question 2
True or False: The mole is only used for measuring gases.
- True
- False
💡 Hint: Consider all forms of matter.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You have 48 grams of calcium carbonate (CaCO₃). How many moles of CaCO₃ do you have?
💡 Hint: Calculate using the molar mass formula.
Question 2
In a chemical reaction, if you start with 10 moles of oxygen (O₂), how many grams of oxygen do you have?
💡 Hint: Use the known molar mass for conversion to grams.
Challenge and get performance evaluation