Sample Exam III - Disclaimer: These Practice Problems...

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Disclaimer: These Practice Problems provided to you do not in any way reflect the content of the actual exam. The main purpose of these problems is to acquaint you with previous lectures and to test your skills in the chapters covered so far. So, please do not rely solely on the Practice Problems if you really want to succeed in the exam. Good luck. PRACTICE PROBLEMS III 1) How many moles of aluminum hydroxide are formed when 4.35 moles of sodium hydroxide are reacted with an excess amount of aluminum sulfate? Al 2 (SO 4 ) 3 (aq) + NaOH (aq) Æ Al(OH) 3 (s) + Na 2 SO 4 (aq) 2) How many grams of Al 2 O 3 are produced by the reaction of 63.0 g Fe 2 O 3 ? Fe 2 O 3 (s) + Al (s) Æ Al 2 O 3 (s) + Fe (s) 3) According to a prelaboratory theoretical yield calculation, a student’s experiment should have produced 1.44 g of magnesium oxide. However, he only obtained 1.23 g magnesium oxide when he weighed out his product. What is the student’s percent yield? 4)
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This note was uploaded on 04/06/2008 for the course BIO 1500 taught by Professor Pandolfi during the Spring '08 term at Wayne State University.

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Sample Exam III - Disclaimer: These Practice Problems...

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