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Presentation on theme: "The MOLE."— Presentation transcript:

1 The MOLE

2 The Mole Mole: the amount of a substance that contains as many particles as there are in exactly 12g of carbon-12 A mole is similar to a dozen

3 Avogadro’s Number Avogadro’s number: the number of particles in exactly one mole of a pure substance Avogadro’s number = 6.022x1023


5 The Mole 1 mol = 6.022 x 1023 atoms Look it’s a conversion factor!
Convert 2.56 mols of Ca to atoms Convert 5.63 x 1022 molecules of CuBr2 to mols



8 Molar Mass Molar Mass: The mass of one mole of a substance
Unit for molar mass is g/mol Molar mass is numerically equal to the average atomic mass in amu

9 Molar Mass Molar mass of lithium is 6.941 g/mol or 6.941 g 1 mol
Molar mass is a conversion factor Convert 2.34 mol of Li to g Convert 150 g of Pb to mol

10 Molar Mass You can also find the molar mass for a molecular compound.
Convert 54.2 g of silver nitrate to mols.


12 The Mole Highway Mass Mole (g) (mol) Amount of a Substance (atoms)
× 1 𝑚𝑜𝑙 𝑚𝑜𝑙𝑎𝑟 𝑚𝑎𝑠𝑠 × × 𝑎𝑡𝑜𝑚𝑠 1 𝑚𝑜𝑙 Mass (g) Mole (mol) Amount of a Substance (atoms) × 𝑚𝑜𝑙𝑎𝑟 𝑚𝑎𝑠𝑠 1 𝑚𝑜𝑙 × 1 𝑚𝑜𝑙 × 𝑎𝑡𝑜𝑚𝑠

13 Using the Mole Highway Convert .0025 g of potassium to mol
Convert 2.22 x 1021 atoms of copper to mol Convert 589 g of oxygen to molecules Convert 5.67 x 1025 molecules of zinc nitrate to grams

14 TRY IT!!!! Convert 859 g of Co to mol
Convert 9.88 x 1022 atoms of K to mol Convert mol of nickel (II) chloride to g Convert 12.3 g of potassium permanganate to molecules

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