1. Adv: Do Now & Agenda
Take out packet from yesterday to be checked (Boyles, Charles’, etc.)
Today: Avogadro’s Law, Ideal Gas Law
To complete: pgs 3 & 5.
Unit 4 Test WED 3/16

2. Avogadro’s Law
Equal volumes of gases contain the same # of molecules

3. Avogadro’s Law ratio of # molecules = #moles =volume 2 molec 1 molec
2 Liters
1 Liter
2H O  H2O

4. Avogadro’s Law Direct relationship increases
As volume increase the number of moles _____________.

5. Molar Volume The volume of one mole of a substance
1 mole of any gas at STP is 22.4L
If you have one mole each of O2 and H2, they will have the ______________ volume and __________ masses.
same
different

6. 𝒙 𝟐𝟐.𝟒 𝑳 𝟏 𝒎𝒐𝒍𝒆
mol
7.08 mol
𝑿 𝟐𝟐.𝟒 𝑳 𝟏 𝒎𝒐𝒍𝒆

7. PV=nRT Ideal Gas Law n= # moles R=universal gas constant
Will be GIVEN on tests/quizzes!
R is the universal gas constant.
To determine which R to use in your equation you have to look at the _____________.
Pressure units being used!!