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1 mol = 6.02 x 10 23 atoms, molecules or particles

1 mol = 6.02 x 10 23 atoms, molecules or particles So…how can we measure out a mole of something??? 1 mol = molar mass of element mass of an element from periodic table expressed in grams. Molar Mass. Also known as: gram atomic mass (for an atom),

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1 mol = 6.02 x 10 23 atoms, molecules or particles

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  1. 1 mol = 6.02 x 1023 atoms, molecules or particles So…how can we measure out a mole of something??? • 1 mol = molar mass of element • mass of an element from periodic table expressed in grams

  2. Molar Mass • Also known as: • gram atomic mass (for an atom), • gram formula mass (for an ionic compound) and • gram molecular mass (molecular compound)

  3. What is the molar mass of • Zinc • Calcium? • What is the molar mass of • NaOH • HNO3?

  4. Practice! 1. How many grams of CuO are equal to 6.21 moles? 6.21 mol CuO 80 g CuO = 497 g CuO 1 mol CuO 2. How many moles of Carbon are equal to 97.3 grams? 97.3 g C 1 mol C = 8.11 mol C 12 g C

  5. Mole / Volume Relationship 1 mol of gas at STP = 22.4 Liters STP = Standard Temperature and Pressure Standard Temp = 0 oC Standard Pressure = 101.3 kPa (kiloPascals) or 1.0 atm (atmospheres)

  6. More Practice! 1. How many liters of space does 1.73 mol of NH3 gas take up at STP? 1.73 mol NH3 22.4 L NH3 = 38.7 L NH3 1 mol NH3 2. How many moles of O2 are equal to 9.6 liters? 9.6 L O2 1 mol O2 = 0.43 mol O2 22.4 L O2

  7. All Together Now! 1. How many grams are equal to 5.84 mol of AlCl3? 1.73 mol NH3 22.4 L NH3 = 38.7 L NH3 1 mol NH3 2. How many moles of O2 are equal to 9.6 liters? 9.6 L O2 1 mol O2 = 0.43 mol O2 22.4 L O2

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