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The Mole

The Mole. Objective 3.02. What is a MOLE????. An amount of a substance A unit of measurement specific to chemistry mole mol n. The Mole. “like a dozen” Specific quantity Does not change Avogadro’s Number: The # of “things” in 1 mole 6.022 x 10 23. The Mole.

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The Mole

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  1. The Mole Objective3.02

  2. What is a MOLE???? • An amount of a substance • A unit of measurement specific to chemistry • mole • mol • n

  3. The Mole “like a dozen” • Specific quantity • Does not change • Avogadro’s Number: • The # of “things” in 1 mole • 6.022 x 1023

  4. The Mole How its used in Chemistry: Elements are made up of _______________. 1 mole Cu = 1 mole Na = 1 mole O =

  5. The Mole How its used in Chemistry: Compounds are made up of _____________. 1 mole NaCl = 1 mole LiOH = 1 mole CaF2 =

  6. The Mole How its used in Chemistry: 1 mole Ca3(PO4)2 * Subscripts = # of moles of the element in the compound

  7. The Mole How its used in Chemistry: 2 H2 + O2 2 H2O * Coefficients = # of moles of a substance in a reaction

  8. Molar Mass (Molecular Weight) • 1 mole of each substance has a “molar mass” – a specific weight • It is the same as atomic mass only in g • Ex: • 1 mole Na = • 1 mole C = • 1 mole Li = • The units for molar mass are g/mol

  9. Molar Mass (Molecular Weight) • 1 mole H2O = • 1 mole NaCl = • 1 mole Pb(NO3)2 =

  10. Mole Conversion Review Problems Convert the following: 1. 4.3g of calcium hydroxide into moles 2. 0.82 moles of aluminum oxide into grams 3. 7.90 x 1024 molecules of water into moles 4. 2.56 moles of sodium carbonate into molecules 5. 8.73 grams of beryllium bromide into molecules 6. 3.17 x 1023 atoms of copper into grams of copper. 7. How many atoms of iron are there in 5.6 moles of iron (III) phosphate? 8. What is the mass of cobalt in 0.31 moles of cobalt (II) nitride?

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