Post Utme Madonna University 2024 Chemistry Question 33

Practice objective / multiple choice question 33 from the 2024 Post Utme Madonna University Chemistry examination.

Post Utme Madonna University 2024 Chemistry Objective / Multiple Choice

Question 33 POST_UTME_MADONNA_UNIVERSITY • 2024 • CHEMISTRY • objective

The half-life of a radioactive subs\tance is 5.00 days. If 100.0 mg of the subs\tance initially contains 3.00 x 10^20 atoms, what is the mass of the subs\tance remaining after 20.0 days?

Answer Options

A. 1.25 mg

B. 1.25 x 10^\( -1 \) mg

Correct Answer C. 1.25 x 10^\( -2 \) mg

D. 1.25 x 10^\( -3 \) mg

Correct Answer

Correct Option:

1.25 x 10^\( -2 \) mg

About This Question

This is Post Utme Madonna University 2024 Chemistry Question 33. It is one of the objective questions from the 2024 Post Utme Madonna University Chemistry examination.

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