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Warm-up

Warm-up. 1.) Define Molar Mass of an element or a substance 2.) Define one mole. What is this number called. 3.) Ca(OH)2 - show all your work a.) Diagram the mole road map b.) What is the MM? b.) How many moles in 2.75 E-4 grams?

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Warm-up

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  1. Warm-up 1.) Define Molar Mass of an element or a substance 2.) Define one mole. What is this number called. 3.) Ca(OH)2 - show all your work a.) Diagram the mole road map b.) What is the MM? b.) How many moles in 2.75 E-4 grams? c .) How many formula units?

  2. Warm-up 1.) Define Molar Mass of an element or a substance Atomic, Formula or Formula Unit weight in grams 2.) Define one mole. What is this number called. 6.02 E23 of atoms, molecules or any other unit – Avagadro’s # 3.) Ca(OH)2 - show all your work a.) What is the MM? 74.092 grams b.) Diagram the mole road map b.) How many moles in 2.75 E-4 grams? c .) How many formula units?

  3. Mole Road Map(Mole is a contraction for Molecular Mass)

  4. b.) How many moles in 2.75 e-4 grams? c .) How many formula units? b.) 2.75 e -4 g / 74.092 g per mol = 3.71 e-6 mol C.) 3.71 e-6 molX 6.02 e23 f.U per mol = 2.23 e18 f.u

  5. Formula Unit – Ionic Compound The smallest repeating unit of a substance.

  6. Chemical Formula - Molecule • A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing of electrons among atoms.

  7. Ionic verse Molecular Solid

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