Root mean square speed and k versus R

A student asked me today (thanks, Austin) why there are two different expressions given on the AP exam for calculating the root mean square speed of a gas, and how this can be explained in terms of the use of k, R, m and M. Here’s the answer that I gave. You...

Subscriber Updates – AP Worksheet Upgrade Completed

One month ahead of schedule the AP Worksheet upgrade has been completed. All subscribers should find the new AP Worksheet package in their subscriber areas. In the final analysis, the AP Worksheet package actually came out at 94 worksheets plus the appropriate...

My latest writing project

In conjunction with Applied Practice, Dynamic Wordworks and Series Editor David Emmerson, I have written a series of AP Chemistry materials aimed at AP exam preparation in the classroom. The books are categorized into a series of topics and consist of AP style...