Post Utme Bowen University 2021 Chemistry Question 33

Practice objective / multiple choice question 33 from the 2021 Post Utme Bowen University Chemistry examination.

Post Utme Bowen University 2021 Chemistry Objective / Multiple Choice
Question 33 POST_UTME_BOWEN_UNIVERSITY • 2021 • CHEMISTRY • objective

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

Answer Options

A. 10 mg
Correct Answer B. 20 mg
C. 30 mg
D. 40 mg
Correct Answer
B
Correct Option:
20 mg

About This Question

This is Post Utme Bowen University 2021 Chemistry Question 33. It is one of the objective questions from the 2021 Post Utme Bowen University Chemistry examination.

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support