Underwater Bubbles

 A backyard experiment you can do that will help you see Boyle's law in action.

https://www.youtube.com/watch?v=aHvGtWXTdso

 You will find more information in the feature article about SCUBA diving in the June 2022 issue of AUS-e-NEWS.

Nitrogen vs Air in Car Tyres

The tread on my car tyres had worn down, so I popped into my local tyre retailer to buy 4 new tyres.

"We can inflate your new tyres with air, or, for an extra $5 per tyre we can fill them with nitrogen gas", the sales person told me, " Nitrogen gas doesn't react with tyre and rim material so your tyres will last longer, it will help maintain the pressure in your tyres so you won't need to check your tyre pressure as often, and it reduces the running temperature of the tyres so your tyres are less likely to explode."

Is this just marketing hype or are there good reasons for choosing to inflate your car tyres with nitrogen instead of air?

Read the March 2020 edition of AUS-e-NEWS to find out more.

Subscribe to AUS-e-NEWS, AUS-e-TUTE's free quarterly newsletter for chemistry teachers and students, at https://www.ausetute.com.au/ausenews.html

Henry's Law and the Solubility of Gases

What is the relationship between the solubility of a gas in a solvent, and the pressure of the gas?
What happens to the solubility of gases as the temperature changes?
If you are asking these questions, you need AUS-e-TUTE's new Henry's Law resources!

AUS-e-TUTE Members will find the new resources listed under Gas Laws in the Members Only Test Centre. Where relevant to your syllabus, links to these resources have also been added to your Syllabus Study Guide.

If you are not an AUS-e-TUTE member, there is a "free-to-view" tutorial available for evaluation purposes at http://www.ausetute.com.au/henryslaw.html

Then, when you are ready to start improving your chemistry results, you can join AUS-e-TUTE at
http://www.ausetute.com.au/register.html