Post Utme Bells University 2019 Chemistry Question 42

Practice objective / multiple choice question 42 from the 2019 Post Utme Bells University Chemistry examination.

Post Utme Bells University 2019 Chemistry Objective / Multiple Choice

Question 42 POST_UTME_BELLS_UNIVERSITY • 2019 • CHEMISTRY • objective

The half-life of a radioactive subs\tance is 5 years. If 100 g of the subs\tance decays to 50 g in 10 years, what is the decay cons\tant?

Answer Options

A. 0.05 yr^\( -1 \)

Correct Answer B. 0.10 yr^\( -1 \)

C. 0.15 yr^\( -1 \)

D. 0.20 yr^\( -1 \)

Correct Answer

Correct Option:

0.10 yr^\( -1 \)

About This Question

This is Post Utme Bells University 2019 Chemistry Question 42. It is one of the objective questions from the 2019 Post Utme Bells University Chemistry examination.

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