sampleexam2

sampleexam2 - 1. Aluminum metal is produced by A) reduction...

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1. Aluminum metal is produced by A) reduction of Al 2 O 3 with carbon. B) electrolysis of a molten mixture of alumina, Al 2 O 3 , and cryolite, Na 3 AlF 6 . C) treatment of Al 2 O 3 with sodium hydroxide. D) the thermite reaction. E) electrolysis of brine containing Al 2 (SO 4 ) 3 . 2. What is the rate constant for a first-order reaction with a half-life of 9.0 ms? 3. A second-order reaction has a rate constant of 1.25 M 1 s 1 . If the initial reactant concentration is 1.0 M, calculate the time required for 90% reaction. 4. Which of the following is a basic oxide? A) CaO(s) B) CO 2 (g) C) SO 2 (g) D) CO(g) E) SiO 2 (s) 5. Consider the following reaction: For an initial concentration of N 2 O of 0.50 M, calculate the concentration of N 2 O remaining after 2.0 min if k = 3.4 × 10 3 s 1 . 6. When magnesium burns in air, the product(s) is(are) A) MgO. B) MgO and Mg 3 N 2 . C) MgAr.
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This note was uploaded on 12/06/2009 for the course CHEM CHEM 6C taught by Professor Hoeger during the Spring '08 term at UCSD.

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sampleexam2 - 1. Aluminum metal is produced by A) reduction...

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