Question
Science task 110: A Western Australian senior class applies the information to a resources, distance or environmental investigation. A tracer starts at 0.22 mol and undergoes 2 half-lives of 4 minutes each. How much remains?
Select an option. Your answer will be checked instantly.
Correct Answer: D. 0.055
Explanation:
After 2 half-lives, amount=0.22/2^2=0.055.
Leave a Reply