Post Utme Uniport 2020 Chemistry Question 28

Practice objective / multiple choice question 28 from the 2020 Post Utme Uniport Chemistry examination.

Post Utme Uniport 2020 Chemistry Objective / Multiple Choice
Question 28 POST_UTME_UNIPORT • 2020 • CHEMISTRY • objective

The half-life of a radioactive subs\tance is 5 years. If 100 grams of the subs\tance is initially present, what is the mass of the subs\tance remaining after 15 years?

Answer Options

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

About This Question

This is Post Utme Uniport 2020 Chemistry Question 28. It is one of the objective questions from the 2020 Post Utme Uniport Chemistry examination.

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