Good morning and welcome to Chemistry.
This week’s assignment is the last one for our few seniors. Congratulations to the class of 2020. You are unique.
Seniors please turn in this week’s assignment by Thursday. All others turn in your work by Friday at 10 a.m.
The Gizmo in explorelearning.com is about the Ideal Gas Law.
Pressure, Temperature and Volume of a gas are all affected by the amount of a gas. Avogadro worked extensively with gasses in Italy back in the 1700s. He found that the number of moles influenced these factors.
Today, we use the variable n for number of moles.
Our Pressure (P) units this week are in atmospheres. We live at approximately 1.00 atmosphere of pressure from the air around us.
Our Temperature (T) units continue to be in Kelvins (K). This is an absolute temperature scale useful for these equations. Imagine using Fahrenheit or Celsius and having to put a value of zero in the equation. That would be janky. Kelvin never gets so cold so as to be zero.
Our Volume (V) units this week are the familiar liters, L. At one atmosphere (1 atm), one mole (1 mol) of an ideal gas at a temperature of 273 K (0 degrees Celsius) will have a volume of 22.4 L. This is a fixed quantity you should know for AP Chemistry next year. These values are standard temperature and pressure (STP).
There is an Ideal Gas Law constant that we give the designation of R. (Nothing to do with pirates.) This will change depending on the units we use for P and V. But, for this week we don’t use this value too much.
The Ideal Gas Law is known as PV=nRT.
Go to explorelearning.com and do the Student Exploration Sheet in its entirety. Take pics of your work and send them to me in Remind.
For your check in this week our Monday meeting for 3rd hour needs to be postponed due to senior day at DHS that I will be attending.
So, Tuesday 4th hour meets at 1:00 p.m. as always. CJPCNP is the code for iLearn and the Big Blue Button for 4th hour. I’m not sure if caps are important but it is all lowercase on the website.
Wednesday 3rd hour will video conference at 1:00 p.m. IZJJQB
Our makeup meeting will be Thursday at 1:00 p.m. Use the 4th hour code and BigBlueButton, please. I will figure it out if you are in 3rd hour, usually. It would be best for 3rd hour folks not to miss Wednesday.
I hope you are healthy and safe. We are doing fine so far. But, people are still getting COVID-19, so be careful.
T. Brown