Post Utme Lasu 2017 Chemistry Question 34

Practice objective / multiple choice question 34 from the 2017 Post Utme Lasu Chemistry examination.

Post Utme Lasu 2017 Chemistry Objective / Multiple Choice
Question 34 POST_UTME_LASU • 2017 • CHEMISTRY • objective

The half-life of a radioactive subs\tance is 5 days. If 100 mg of the subs\tance is initially present, how much of the subs\tance will remain after 20 days?

Answer Options

Correct Answer A. 12.5 mg
B. 25 mg
C. 50 mg
D. 100 mg
Correct Answer
A
Correct Option:
12.5 mg

About This Question

This is Post Utme Lasu 2017 Chemistry Question 34. It is one of the objective questions from the 2017 Post Utme Lasu Chemistry examination.

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