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Topic: Chem Math Aim: How do you represent large quantities of atoms? Do Now: Convert 7yd to inches – show work! HW: RB p. 50 #27-36 write out all work on loose leaf

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One last conversion… Convert your age (in years only) to SECONDS.

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The Mole Describes a quantity We use terms like this all the time! 1 Dozen eggs = ______________ 1 pair of shoes = ______________ 1 Ton of bricks = ______________ 1 MOLE = __________________ This is known as Avogadro’s Number. 6.02 x 10 23 particles

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The Mole 1 mole of a substance = formula mass Ex. Formula mass of water = 18g/1mole

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Mole Conversions- Practice Use MOLAR MASS (grams/1mol) as a conversion factor. Calculate the # of moles of glucose (C 6 H 12 O 6 ) in 5.380g of C 6 H 12 O 6.

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Mole Conversions- Practice How many moles of NaHCO 3 are there in 508g of NaHCO 3?

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Mole Conversions- Practice Calculate the mass in grams, of 0.433 mol of calcium nitrate.

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Mole Conversions- Practice What is the mass, in grams, of 6.33 mol of NaHCO 3

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Molar Conversions (p.80-85, )

Molar Conversions (p.80-85, )

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