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Section 10.2 lecture (part B) for Honors & Prep Chemistry

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- 1. Bellwork- Mole conversions <ul><li>1. Gold is currently selling for $23.77 per gram. </li></ul><ul><li>a) How much would two moles of gold cost? </li></ul><ul><li>b) How many atoms are in two moles of gold? </li></ul><ul><li>2. How many grams of Be(NO 3 ) 2 would contain 3.2 moles? </li></ul>
- 2. The Mole–Volume Relationship <ul><ul><ul><li>Avogadro’s Law- </li></ul></ul></ul><ul><ul><ul><li>Equal volumes of gases at the same temperature and pressure contain equal numbers of particles. </li></ul></ul></ul>
- 3. <ul><ul><ul><li>The volume of a gas varies with temperature and pressure. </li></ul></ul></ul>
- 4. <ul><ul><ul><li>The volume of a gas varies with temperature and pressure. </li></ul></ul></ul><ul><ul><ul><li>Because of these variations, the volume of a gas is usually measured at a standard temperature and pressure. </li></ul></ul></ul>
- 5. <ul><ul><ul><li>The volume of a gas varies with temperature and pressure. </li></ul></ul></ul><ul><ul><ul><li>Because of these variations, the volume of a gas is usually measured at a standard temperature and pressure. </li></ul></ul></ul><ul><ul><ul><li>Standard temperature and pressure (STP) means a temperature of 0°C and a pressure of 1 atm. </li></ul></ul></ul>
- 6. <ul><ul><ul><li>At STP, 1 mol of any gas occupies a volume of 22.4 L. </li></ul></ul></ul>
- 7. <ul><ul><ul><li>At STP, 1 mol of any gas occupies a volume of 22.4 L. </li></ul></ul></ul><ul><ul><ul><li>The quantity 22.4 L is called the molar volume of a gas. </li></ul></ul></ul>
- 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? <ul><li>It doesn’t matter what type of gas we have </li></ul>
- 17. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP? <ul><li>It doesn’t matter what type of gas we have </li></ul><ul><li>If a gas is at STP then 1 mole = 22.4L </li></ul>
- 18. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP? <ul><li>It doesn’t matter what type of gas we have </li></ul><ul><li>If a gas is at STP then 1 mole = 22.4L </li></ul><ul><li>44.8L </li></ul>
- 19. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP? <ul><li>It doesn’t matter what type of gas we have </li></ul><ul><li>If a gas is at STP then 1 mole = 22.4L </li></ul><ul><li>44.8L </li></ul>
- 20. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP? <ul><li>It doesn’t matter what type of gas we have </li></ul><ul><li>If a gas is at STP then 1 mole = 22.4L </li></ul><ul><li>44.8L </li></ul> 22.4L
- 21. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP? <ul><li>It doesn’t matter what type of gas we have </li></ul><ul><li>If a gas is at STP then 1 mole = 22.4L </li></ul><ul><li>44.8L </li></ul> 1 mol 22.4L
- 22. How many moles are in 44.8 liters of oxygen gas (O 2 ) at STP? <ul><li>It doesn’t matter what type of gas we have </li></ul><ul><li>If a gas is at STP then 1 mole = 22.4L </li></ul><ul><li>44.8L </li></ul> 1 mol 22.4L = 2 moles
- 23. The Mole Road Map <ul><li>The Mole Road Map </li></ul>
- 24. <ul><ul><li>3. What is the volume of 0.35 mol of oxygen gas at STP? </li></ul></ul><ul><ul><ul><li>a. 32 L </li></ul></ul></ul><ul><ul><ul><li>b. 64 L </li></ul></ul></ul><ul><ul><ul><li>c. 7.8 L </li></ul></ul></ul><ul><ul><ul><li>d. 16 L </li></ul></ul></ul>10.2 Section Quiz.

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