Good morning and welcome to Chemistry.

We continue with Equilibrium this week by looking at gases and the pressures of individual gases and how these contribute to the total pressure.

Dalton’s Law of Partial Pressures says that the individual pressures of each gas in a mixture of gases will add up to the total pressure.

So if a balloon contains a pressure of 29 kPa of helium, 1 kPa of oxygen and 10 kPa of Nitrogen, the total pressure of the balloon is 40 kPa. KiloPascals and MegaPascals are units of pressure. The English units (like for your car tires) might be measured in pounds per square inch or PSI.

This week’s Gizmo takes you through some interesting equilibrium simulations. I found that if you let the simulation run for a minute or two then pause it is easier to record the data.

Go to explorelearning.com and do the Equilibrium and Pressure Gizmo. Answer each question thoroughly and send results via Remind by 10 a.m. Friday. Also, do the Assessment located below the Gizmo. It is a tough one.

Good luck and stay healthy!

T. Brown