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Discussion: The Mole

Discussion: The Mole. Objective: To understand the mole concept and how it is related to the more familiar dozen. The Dozen. How do you convert a number like 54 to dozen? we divide by 12 How do we convert dozens to numbers? Multiply by 12. Counting atoms.

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Discussion: The Mole

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  1. Discussion: The Mole Objective: To understand the mole concept and how it is related to the more familiar dozen.

  2. The Dozen • How do you convert a number like 54 to dozen? • we divide by 12 • How do we convert dozens to numbers? • Multiply by 12

  3. Counting atoms • How many atoms are there in a single molecule of

  4. The dozen is not used to measure atoms • Why would we not measure atoms in dozen? • They are to small • The quantity used to express how many in atoms is the mole. • It is equal to 6.02 x 1023

  5. 6.02 x 1023 • Which, if not written in scientific notation is • Mole = 602,000,000,000,000,000,000,000 • Dozen = 12 • Dozen = 1.2 x 101 • Mole = 6.02 x 1023

  6. How many BB are in 2.5 dozen? • If we wanted to find the number of baseballs in 2.5 dozen we would • multiply _____ by _____ = ______

  7. How many atoms are in 2.5 moles of sodium? • If we wanted to find the number of atoms of sodium in 2.5 moles we would • Multiply 2.5 by 6.02 x 1023 = 1.505 x 1024

  8. How many atoms are in 0.5 moles of calcium? • 0.5 x 6.02 x 1023 = 3.01x 1023 • Another way • 0.5 mol

  9. Convert 5.6 x 1023 molecules of oxygen to moles • 5.6 x 1023 molecules O2 • 5.6 x 1023

  10. How to find the mass of one mole of an element • To find the mass of one mole of sodium we look on the periodic table. • 1.00 mole Na = 23.0 grams • 4.2 moles • 4.2 x 23 = 96.6

  11. Calculate the formula mass of the compounds below • CuCO3 63.5 + 12 + (3 x 16) = 123.5 • Ba(NO3)2 = 137.3 + 2 x 14 + 6 x 16 = • Ca3(PO4)2 • Sodium chloride • Iron(III) oxide • Fe2O3 2 x 55.8 + 3 x 16 = 159.6

  12. Find the equality for the compounds below • 1.00 mole CuCO3 = 123.5g • 5.0 grams CuCO3 • 0.0404 moles CuCO3

  13. How to do the worksheet

  14. More Worksheet

  15. Quiz Ch 6 • This is on the Discussion the mole • Find this quiz please!

  16. Quiz • 1. How many grams in a mole of sodium? • 2. How many grams in a mole of sodium chloride? • 3. How many grams in a mole of oxygen? • 4. If you have 56 grams of carbon monoxide you have ______ moles • 5. how many atoms are in one mole?

  17. Quiz • 6. How many moles of oxygen atoms are in one mole of oxygen molecules? • 7. How many moles of hydrogen atoms are in two moles of C12H22O11 molecules? • 8. 2.5 moles of K2O = _____ grams. • 9. How many dozen eggs are in 2.4 x102 eggs? • 10. 3.01 x 1023 = _______ moles

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