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Chemistry

Chemistry. Chapter 11 The Mole. Counting “Terms”. Dozen Baker’s Dozen Pair Ream Gross. Chemistry Counting “term”. The Mole (mol) 6.02 x 10 23 Avogadro’s Number SI unit for measuring the amount of a substance # of atoms in 12 grams of pure Carbon-12. 6.02 x 10 23.

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Chemistry

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  1. Chemistry Chapter 11 The Mole

  2. Counting “Terms” • Dozen • Baker’s Dozen • Pair • Ream • Gross

  3. Chemistry Counting “term” • The Mole • (mol) • 6.02 x 1023 • Avogadro’s Number • SI unit for measuring the amount of a substance • # of atoms in 12 grams of pure Carbon-12

  4. 6.02 x 1023 • 602,000,000,000,000,000,000,000 • 1 mol of water = 18 ml • 1mol of pennies = stack the pennies – the stack could reach to the sun and back 2 billion times • 1 mol of dollars = could not all be spent even if you spent a billion dollars a day over a trillion years • 1 mol paperclips – could wrap around the world 400 trillion times

  5. Conversions • Moles to Particles • Ex. P. 311

  6. Conversions • Particles to moles • Ex. Page 312

  7. Conversions • The mass in grams of one mole of any pure substance is called its “molar mass” • Molar mass of any element equals its atomic mass • Unit = g/mol • Ex. 1 mol Fe = 55.845 grams • 1 mol NaCl = 22.99 + 35.453 = 58.443

  8. Conversions • Mol to mass • Ex. P. 316

  9. Conversions • Mass to mol • Ex. P 316

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