Post Utme Noun 2018 Chemistry Question 28

Practice objective / multiple choice question 28 from the 2018 Post Utme Noun Chemistry examination.

Post Utme Noun 2018 Chemistry Objective / Multiple Choice
Question 28 POST_UTME_NOUN • 2018 • CHEMISTRY • objective

The half-life of a radioactive subs\tance is 5.00 days. If 100.0 g of the subs\tance initially present, what mass of the subs\tance remains after 20.0 days?

Answer Options

Correct Answer A. 25.0 g
B. 50.0 g
C. 75.0 g
D. 100.0 g
Correct Answer
A
Correct Option:
25.0 g

About This Question

This is Post Utme Noun 2018 Chemistry Question 28. It is one of the objective questions from the 2018 Post Utme Noun Chemistry examination.

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