Post Utme Lasu 2017 Chemistry Question 18

Practice objective / multiple choice question 18 from the 2017 Post Utme Lasu Chemistry examination.

Post Utme Lasu 2017 Chemistry Objective / Multiple Choice
Question 18 POST_UTME_LASU • 2017 • CHEMISTRY • objective

The half-life of a radioactive subs\tance is 10 years. If 100 g of the subs\tance is present initially, what is the mass of the subs\tance remaining after 30 years?

Answer Options

Correct Answer A. 6.25 g
B. 12.5 g
C. 25.0 g
D. 50.0 g
Correct Answer
A
Correct Option:
6.25 g

About This Question

This is Post Utme Lasu 2017 Chemistry Question 18. It is one of the objective questions from the 2017 Post Utme Lasu Chemistry examination.

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