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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define half-life in your own words.
💡 Hint: Think about what happens to reactant amounts over time.
Question 2
Easy
What is the equation for calculating half-life in first-order reactions?
💡 Hint: Recall the formula given earlier.
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 definition of half-life in chemical reactions?
💡 Hint: Think about the meaning of 'half-life' as two parts.
Question 2
For first-order reactions, is half-life dependent on the initial concentration?
- True
- False
💡 Hint: Recall our discussion about constant half-life.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A hypothetical drug has a half-life of 3 hours. If a patient takes 50 mg at 8 AM, how much of the drug remains in their system at 2 PM?
💡 Hint: Remember to count the number of half-lives.
Question 2
For a certain reaction with a half-life of 5 days, if you start with 80 grams of a reactant, how much remains after 15 days?
💡 Hint: Calculate how many half-lives fit into 15 days.
Challenge and get performance evaluation