Quiz_1Mario_key

Quiz_1Mario_key - Chem 124 Spring 2008 Quiz #1 Mario Dr....

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Chem 124 Quiz #1 Mario Dr. Retsek Spring 2008 NAME: _ KEY ______________________ Computer #: ________ Show all work for full credit. Include units and obey the rules of significant figures in your final answer. 1. (10 points) An aqueous solution of sodium phosphate was combined with an aqueous solution of silver(I) nitrate and a white solid formed. a. Write the complete, balanced chemical equation (including states of matter). Na 3 PO 4 (aq) + 3 AgNO 3 (aq) Æ Ag 3 PO 4 (s) + 3 NaNO 3 (aq) b. What type of reaction is this? __ metathesis or double displacement ________ 2. (10 points, 2 points each) Check ( 9 ) whether the statement is true or false. Statement True False a. Internal energy is a state function . E (capital letter = state function) 9 b. In an exothermic process, heat is lost by the surroundings. Heat is lost by the SYSTEM 9 c. For the reaction, Al 2 O 3 (s) 2 Al (s) + 2 3 O 2 (g) H rxn = +1676 kJ the products would appear higher on an energy level diagram. 9
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This note was uploaded on 06/07/2008 for the course CHEM 124 taught by Professor Hascall during the Spring '08 term at Cal Poly.

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Quiz_1Mario_key - Chem 124 Spring 2008 Quiz #1 Mario Dr....

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