Ch. 10 Moles!.

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Presentation transcript:

Ch. 10 Moles!

Review: How many is a mole? 602,200,000,000,000,000,000,000 Summary: A LOT

Molar Mass The Mass of 1 mole (in grams) SAME as avg. atomic mass (bottom # in periodic square) Examples: 1 mole of C atoms = 12.01 g 1 mole of Mg atoms = 24.31 g 1 mole of Cu atoms = 63.55 g

Finding Molar Mass of Compounds Step 1: Find Molar Masses of each element Step 2: add them together Example: O2 Step 1: Oxygen’s Molar Mass = 16.00 g Step 2: We have 2 Oxygens so… 16.00 x 2 = 32g 16.00

Learning Check: When ready write your group’s answer on the board 1) H2 5) CaCl2 2) CO2 6) KCl 3) HCl 7) MgCl2 4) Br2