14.4 1st Order Half Life Example Problem

The content of this video is designed to accompany the 12th edition of "Chemistry The Central Science" by Brown, Lemay, Bursten, Murphy, and Woodward. The title of the video corresponds to the section number and topic from the textbook.
©2012 Matthew W. Stoltzfus. All Rights Reserved.

[@iGamerizaton]

Isn't [A]o supposed to be on the bottom? If its half life is 40 min wouldn't it be 100% complete at 80 min?

[@Zman4814]

A half-life is the time it takes for the concentration to be cut in half. So no

[@user-yh2zd3xn1d]

Life saver. 10Q