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The Chemistry Mole

The Chemistry Mole. Counting Atoms. What do the following have in common? Dozen Gross Baker’s Dozen. Brain warm-up. A farmer collects 743 eggs. How many dozen is this? Fav #. New counting number. Mole Abbreviated = mol Means 6.022 x 10 23 items Calculator break—this # can be stored

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The Chemistry Mole

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  1. The Chemistry Mole

  2. Counting Atoms • What do the following have in common? • Dozen • Gross • Baker’s Dozen

  3. Brain warm-up A farmer collects 743 eggs. How many dozen is this? Fav #. . .

  4. New counting number • Mole • Abbreviated = mol • Means 6.022 x 1023 items • Calculator break—this # can be stored • Molecule • Abbreviated = mc

  5. Mole practice How many atoms in 3.2 mole of iron?

  6. Practice #2 How many atoms in 0.5 moles of calcium?

  7. Practice #3 A sample contains 4.5 x 1033 atoms of nickel. How many moles is this?

  8. Relating moles to mass • Place the following items in order from least to greatest mass: • cow (real one, not plastic) • ping pong ball • golf ball • 10 lb bowling ball • a chicken.

  9. If you had a gross of each of the items above, would that change how you would rank them? • It is the same with elements and compounds—not all compounds or elements have the same mass.

  10. Rank the following elements from least to greatest mass: Zn, Pb, H, N, O, Cl, Li, He, Mn

  11. Gram formula mass = 1 mole of that substance • So. . .1 mole of H has a mass of? • 1 mole of H2 has a mass of? 1 mole of O2 has a mass of? 2 moles of Fe have a mass of?

  12. Practice with moles How many moles in 60 g of carbon? How many moles in 60 g of barium?

  13. Practice 4 How many molecules are in 450 g of lead (II) iodide?

  14. Practice 5 How many grams are in 6.5 x 1025 molecules of zinc (II) hydroxide?

  15. Visual for Some Moles gfm 6.022 x 1023 Mass Molecules

  16. 1 mole 6.022 x 1023 atoms 1 mole gfm Or another way

  17. Practice • What would be the mass of 2.5 moles of Cl2? • What would be the mass of 3.0 moles of lithium carbonate? • What would be the mass of 0.35 moles of copper (II) oxide?

  18. 4. How many moles would be contained in 37 grams of chromium (VI) chloride? 5. How many moles would be contained in 249 mg of strontium oxide? 6. How many moles would be contained in 0.89 kg of aluminum sulfate?

  19. 7. How many molecules would be contained in 3.1 moles of calcium phosphate? 8. How many molecules would be contained in 50 g of lithium iodide? 9. How many molecules would be contained in 3.4 x 10-2 moles of iron (III) bicarbonate?

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