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Mole Calculations 1

Mole Calculations 1. Chemical Calculations. Atoms and molecules are extremely small. If they are so small and so light, how can we weigh them?. We weigh large numbers of them. 1.00 g H = 6.02 x 10 23 atoms = 1.00 mole This is called Avogadro’s number.

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Mole Calculations 1

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  1. Mole Calculations 1

  2. Chemical Calculations Atoms and molecules are extremely small. If they are so small and so light, how can we weigh them? We weigh large numbers of them.

  3. 1.00 g H = 6.02 x 1023 atoms = 1.00 mole This is called Avogadro’s number

  4. 1 dozen donuts = 12 donuts 1 century = 100 years 1 millennium = 1000 years 1.00 mole = 6.02 x 1023 particles

  5. TThe mole is a large number of particles pparticle Aatom element Cu 6.02 x 1023 atoms/mole Mmolecule covalent CH4 6.02 x 1023 molecules/mole FFormula Unitionic NaCl 6.02 x 1023 FUs/mole

  6. 1. Convert 2.5 x 1025 at C to moles 2.5 x 1025 at C x 1 mole = 42 moles C 6.02 x 1023 at C

  7. 2. Convert 16.3 moles CO2 to molecules 16.3 moles x 6.02 x 1023 molecules = 9.81 x 1024 molecules 1mole

  8. 3. Convert 8.9 x 1024 molecules CO2 to moles x 1 mole 8.9 x 1024 molecules = 15 moles CO2 6.02 x 1023 molecules

  9. 4. Convert 28 moles NaCl to Formula Units x 6.02 x 1023 FU 28 moles = 1.7 x 1025 FUs 1mole

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