The document discusses moles, molar volume, and calculations involving moles of gases. It states that at standard temperature and pressure (STP), 1 mole of any gas occupies a volume of 22.4 L. It provides examples of calculating the number of moles or volume of a gas given amounts or volumes at STP. These include finding the cost of 2 moles of gold at $23.77 per gram, the grams of Be(NO3)2 for 3.2 moles, the volume of 0.60 moles of a gas at STP, and the moles of oxygen in 44.8 L at STP.

1. Bellwork- Mole conversions 1. Gold is currently selling for $23.77 per gram. a) How much would two moles of gold cost? b) How many atoms are in two moles of gold? 2. How many grams of Be(NO 3 ) 2 would contain 3.2 moles?

2. The Mole–Volume Relationship Avogadro’s Law- Equal volumes of gases at the same temperature and pressure contain equal numbers of particles.

3. The volume of a gas varies with temperature and pressure.

4. The volume of a gas varies with temperature and pressure. Because of these variations, the volume of a gas is usually measured at a standard temperature and pressure.

5. The volume of a gas varies with temperature and pressure. Because of these variations, the volume of a gas is usually measured at a standard temperature and pressure. Standard temperature and pressure (STP) means a temperature of 0°C and a pressure of 1 atm.

6. At STP, 1 mol of any gas occupies a volume of 22.4 L.

7. At STP, 1 mol of any gas occupies a volume of 22.4 L. The quantity 22.4 L is called the molar volume of a gas.

8. 10.7

9. 10.7 Write the given 0.60 mol

10. 10.7 Write the given 0.60 mol 

11. 10.7 Write the given 0.60 mol  1 mol

12. 10.7 Write the given 0.60 mol  1 mol 22.4L

13. 10.7 Write the given 0.60 mol  1 mol 22.4L Because the ? asks for volume at STP

14. 10.7 Write the given 0.60 mol  1 mol 22.4L = 13.4L Because the ? asks for volume at STP

15. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP?

16. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP? It doesn’t matter what type of gas we have

17. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP? It doesn’t matter what type of gas we have If a gas is at STP then 1 mole = 22.4L

18. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP? It doesn’t matter what type of gas we have If a gas is at STP then 1 mole = 22.4L 44.8L

19. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP? It doesn’t matter what type of gas we have If a gas is at STP then 1 mole = 22.4L 44.8L 

20. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP? It doesn’t matter what type of gas we have If a gas is at STP then 1 mole = 22.4L 44.8L  22.4L

21. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP? It doesn’t matter what type of gas we have If a gas is at STP then 1 mole = 22.4L 44.8L  1 mol 22.4L

22. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP? It doesn’t matter what type of gas we have If a gas is at STP then 1 mole = 22.4L 44.8L  1 mol 22.4L = 2 moles

23. The Mole Road Map The Mole Road Map

24. 3. What is the volume of 0.35 mol of oxygen gas at STP? a. 32 L b. 64 L c. 7.8 L d. 16 L 10.2 Section Quiz.