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Molar Conversions

The Mole. Molar Conversions. VERY. A large amount!!!!. A. What is the Mole?. A counting number (like a dozen) Avogadro’s number (N A ) 1 mol = 6.02  10 23 items. This is the fundamental definition of what one mole is:.

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Molar Conversions

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  1. The Mole Molar Conversions

  2. VERY A large amount!!!! A. What is the Mole? • A counting number (like a dozen) • Avogadro’s number (NA) • 1 mol = 6.02  1023 items

  3. This is the fundamental definition of what one mole is: • One mole contains as many “entities” (things) as there are atoms in 12 grams of carbon-12. • One mole of carbon-12 contains 6.02 x 1023 atoms of carbon-12.

  4. A. What is the Mole? HOW LARGE IS IT??? • 1 mole of pennies would cover the Earth 1/4 mile deep! • 1 mole of hockey pucks would equal the mass of the moon! • 1 mole of basketballs would fill a bag the size of the earth!

  5. B. Molar Mass • Mass of 1 mole of an element or compound. • Atomic mass tells the... • atomic mass units per atom (amu) • grams per mole (g/mol)

  6. B. Molar Mass Examples 12.01 g/mol 26.98 g/mol 65.39 g/mol • carbon • aluminum • zinc

  7. B. Molar Mass Examples • water • sodium chloride • H2O • 2(1.01) + 16.00 = 18.02 g/mol • NaCl • 22.99 + 35.45 = 58.44 g/mol

  8. B. Molar Mass Examples • sodium bicarbonate • sucrose • NaHCO3 • 22.99 + 1.01 + 12.01 + 3(16.00) = 84.01 g/mol • C12H22O11 • 12(12.01) + 22(1.01) + 11(16.00) = 342.34 g/mol

  9. Day 2

  10. MASS IN GRAMS MOLES NUMBER OF PARTICLES C. Molar Conversions molar mass 6.02  1023 (g/mol) (particles/mol)

  11. C. Molar Conversion Examples • How many moles of carbon are in 26 g of carbon? 26 g C 1 mol C 12.01 g C = 2.2 mol C

  12. C. Molar Conversion Examples • How many moles of sodium chloride are in 26 g of sodium chloride? 26 g NaCl 1 mol NaCl 58.44 g NaCl = 0.44 mol NaCl

  13. C. Molar Conversion Examples • How many moles of magnesium fluoride are in 85 g of MgF2? 85 g MgF2 1 mol MgF2 62.31 g MgF2 = 1.36 mol MgF2

  14. Day 3

  15. MASS IN GRAMS MOLES NUMBER OF PARTICLES C. Molar Conversions molar mass 6.02  1023 (g/mol) (particles/mol)

  16. C. Molar Conversion Examples • How many molecules are in 2.50 moles of C12H22O11? 6.02  1023 molecules 1 mol 2.50 mol = 1.51  1024 molecules C12H22O11

  17. C. Molar Conversion Examples • How many molecules are in 2.50 moles of C2H6? 6.02  1023 molecules 1 mol 2.50 mol = 1.51  1024 molecules C2H6

  18. Day 4

  19. C. Molar Conversion Examples • Find the mass of 2.1  1024 molecules of NaHCO3. 2.1  1024 molecules 1 mol 6.02  1023 molecules 84.01 g 1 mol = 290 g NaHCO3

  20. C. Molar Conversion Examples • How many atoms are in 10 grams of NaCl. 1 mol 58.44 g NaCl 6.021023 atoms NaCl 1 mol 10 g NaCl = 1.03x 1023 atoms NaCl

  21. MOLE DAY FUNNIES • Q: What did Avogadro teach his students in math class? • Moletiplication

  22. Q: What kind of fruit did Avogadro eat in the summer? • A: Watermolens

  23. Why was there only one Avogadro? • When they made him, they broke the Moled

  24. What did Avogadro invent for his wife to use as a night cream? Oil of Molay

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