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Ethane

Organic Chapter 4 ppt

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Chapter 4 The Study of Chemical Reactions Organic Chemistry, 6th Edition L. G. Wade, Jr. Chapter 4 * Introduction Reactants ? Products: overall reaction. Mechanism: complete step-by-step description of exactly which bonds break and form in what order to give observed products To learn more about a reaction: Thermodynamics Kinetics. => Chapter 4 Chapter 4 * Thermodynamics study of energy changes provides an opportunity to: compare stability of reactants and products predict which compounds are favored Kinetics study of reaction rates, determining which products form the fastest helps predict how the rate will change if conditions are changed Chapter 4 Chapter 4 * Chlorination of Methane

AP Chem Practice Exam

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Course: CHEMISTRY Number: 205/4 Section: 03, 04 and 52 Instructors: N. Schoonhoven, G. D?n?s Examination: Final Date: 14th April, 2011 Time: 19:00 - 22:00 # of pages: 15 Materials Allowed: A data sheet and periodic table are attached to this paper - no other materials are allowed. NO BOOKLET. ALL ANSWERS MUST BE ON THE QUESTIONNAIRE. Calculators Allowed: Yes (Cell phones or electronic dictionaries may NOT be used as calculators.) Special Instructions: This exam contains three sections. Please read the instructions before each section carefully. LAST NAME: ____________________________ FIRST NAME: ____________________________ STUDENT NUMBER: _____________________ SIGNATURE: ____________________________

Stoichiometry review questions

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A substance with the formula AB has the composition by mass of 30% A and 70% B. What is the composition by mass of the compound A2B? 70% A, 30% B 50% A, 50% B 46% A, 54% B 60% A, 40% B 65% A, 35% B A mass of 21.5 grams of calcium hydroxide reacts with an excess of phosphoric acid. What mass of calcium phosphate could be recovered from solution? 31.6 grams 94.7 grams 326 grams 284 grams 186 grams Given the equation 3A + 4B ? 2C + 3D, you react 5 moles of A with 7 moles of B. Which of the following statements is true? B has a greater molar mass than A A is the limiting reactant A has a greater molar mass than B
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