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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the mole concept in chemistry?
💡 Hint: Think about how chemists count atoms or molecules.
Question 2
Easy
What does it mean to balance a chemical equation?
💡 Hint: Remember the law of conservation of mass!
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
What is the value of Avogadro’s number?
- 6.022 x 10^22
- 6.022 x 10^23
- 6.022 x 10^24
💡 Hint: Remember that it helps to count atoms and molecules.
Question 2
True or False: A balanced chemical equation has the same number of each atom on both sides.
- True
- False
💡 Hint: Consider why balancing is necessary in chemistry.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A chemist has 10 grams of nitrogen and 5 grams of hydrogen. Given that the balanced reaction is : N2 + 3 H2 → 2 NH3. Determine the limiting reactant and calculate the maximum yield of ammonia produced.
💡 Hint: Balance the equation first and convert all quantities to moles.
Question 2
If you mixed 3 moles of A with 5 moles of B in the reaction 2A + 3B → 4C. What is the theoretical yield of product C and what is the limiting reactant?
💡 Hint: Check which reactant makes the least amount of product.
Challenge and get performance evaluation