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Moles and Molecules

Moles and Molecules. Formula Mass. Sum of the average atomic masses of all the atoms represented in a formula Measured in amu What is the formula mass of KClO 3 ?. Molar Mass. How many grams of a substance there are per mole of that substance Numerically equal to the formula mass

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Moles and Molecules

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  1. Moles and Molecules

  2. Formula Mass • Sum of the average atomic masses of all the atoms represented in a formula • Measured in amu • What is the formula mass of KClO3?

  3. Molar Mass • How many grams of a substance there are per mole of that substance • Numerically equal to the formula mass • Units are g/mole • What is the molar mass of water?

  4. Mole Problems • How many grams are in 2.8 mole of MgCl2? • How many grams in 3.0 mole of NaCl? • How many grams in .10 mole of carbon dioxide?

  5. Mole Problems • How many moles in 125g of BeS? • How many moles in 450 g of CaCO3? • How many moles in 33.4 g of O2?

  6. Mole Problems • How many molecules in .58 mole of CaCl2? • How many molecules in 3.0 mole of water?

  7. Mole Problems • How many moles is 1.35x1024 molecules of water? • How many moles is 5.6x 1023 molecules of HCl?

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