102Stoichiometry - 24 Mg (red), and two minor ones, 25 Mg...

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Lesson 2 Stoichiometry Chapters 1, 2, 3 and 4 (Petrucci et al.)
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Lesson 2 Review of basic definitions Element: composed of identical atoms that cannot be decomposed into simpler substances by chemical methods. Ex: carbon, gold, chlorine. Atom: the smallest unit that maintains the properties of the element. Isotope: atoms of the same element having different atomic masses, i.e. same number of protons (atomic number), but different number of neutrons.
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Lesson 2 Classification of matter Petrucci et al.
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Lesson 2 Petrucci et al. (a)filtration (b)distillation (c) / (d) chromatography
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Lesson 2 Avogadro’s number and the mole The number of carbon atoms in exactly 12.0 g of
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Lesson 2 Petrucci et al. (a)There is only one type of F atom, 19 F (red). (b) In Cl, 75.77% of the atoms are 35 Cl (red) and the remainder are 37 Cl (blue). (c) Mghas one principal isotope,
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Unformatted text preview: 24 Mg (red), and two minor ones, 25 Mg (gray) and 26 Mg (blue). (d) Pb has 4 isotopes: 1.4% 204 Pb (yellow), 24.1% 206 Pb (blue), 22.1% 207 Pb (gray), and 52.4% 208 Pb (red). Lesson 2 Molar masses The mass of one mole of a substance is called the molar mass of the substance. 2 Lesson 2 Petrucci et al. Lesson 2 Example 1 Determine: a) The number of moles of Ar atoms in a 5.25 mg sample of Argon. b) The molar mass of an element if the Lesson 2 Example 2 Lesson 2 Example 3 Chemical bottles labeled to contain blue-Lesson 2 Suggested Readings 2.7 The Concept of the Mole and the Avogadro Constant 2.8 Using the Mole Concept in Calculations 3.1 Types of Chemical Compounds 3.2 The Mole Concept and Chemical Compounds 3.3 Composition of Chemical Compounds...
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This note was uploaded on 04/17/2008 for the course CHEMISTRY CHE102 taught by Professor Grove during the Fall '06 term at Waterloo.

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102Stoichiometry - 24 Mg (red), and two minor ones, 25 Mg...

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