THE MOLE (2’56”video: “The Mole and Conversion Methods”)

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Presentation transcript:

THE MOLE (2’56”video: “The Mole and Conversion Methods”)

What is the mole? We’re not talking about this kind of mole!

What is the Mole? A large amount!!!!

n 1 mole of hockey pucks would equal the mass of the moon! n 1 mole of basketballs would fill a bag the size of the earth! n 1 mole of pennies would cover the Earth 1/4 mile deep!

Counting Units

Practice! ◦ If I have 1 mole of marshmallows, how many do I have? ◦ If I have 2 moles of jelly beans, how many do I have? ◦ If I have 6.02 x pennies, how many do I have? 6.02 X Marshmallows 2 moles 6.02 x jelly beans 1 mole = 1.2 x jelly beans 1 mole of pennies

= The number of Carbon atoms in 12 grams of Carbon-12

Masses ◦Atomic Mass: mass of 1 atom of any element (unit: amu) ◦Molar Mass: mass of 1 mole of atoms / molecules (unit: gram) From the Periodic Table, 1 Carbon atom weighs 12 amu’s 1 mole of Carbon atoms weighs 12 grams

Calculating Molar Mass for Compounds

Examples for Molar Masses of Compounds 1.Water H 2 O 2(1.01) = g/mol 2. Sodium chloride NaCl = g/mol