1. Avogadro’s Law

2. What is the same about these gases? What is different about these gases?

3. STP (Standard Temperature and Pressure) =
Avogadro’s principle states that equal volumes of gases at the same temperature and pressure contain equal number of particles.
The molar volume for a gas is the volume that one mole occupies at 0oC and 1 atm or STP. This is equal to 22.4 L.
STP (Standard Temperature and Pressure) =
1 atm and 0oC or 1 atm and 273K
1 mole of gas at STP = 22.4 L

4. Problem #1
Calculate the volume that mol of gas at standard temperature and pressure (STP) will occupy.

5. Problem #2
How many moles of oxygen gas will be contained in 5.00L flask at STP?

6. Problem #3
Calculate the volume that g of methane gas will occupy at STP.

7. Problem #4
How many grams of carbon dioxide gas are in a 0.75 L balloon at STP?