Practice Exam 1 Fall 2008

# Practice Exam 1 Fall 2008 - Version 462 Practice Exam 1...

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Version 462 – Practice Exam 1 Fall 2008 – Brodbelt – (53765) 1 This print-out should have 27 questions. Multiple-choice questions may continue on the next column or page – fnd all choices be±ore answering. This exam was given in CH301 in the ±all o± 2007. Use it as a guide to gauge your progress and per±ormance, but remember that the ma- terial covered in CH301 di²ers a little each year. I± there are questions on the practice exam that we have not covered in class, then they are not appropriate. 001 10.0 points I± the ±ollowing equation is properly balanced, what are the coe³cients in ±ront o± each com- pound? AlCl 3 + SCl 2 Al 2 S + Cl 2 1. 1; 2; 1; 2 2. 1; 1; 1; 1 3. 2; 2; 1; 4 4. 2; 1; 2; 4 5. 2; 2; 2; 5 6. 2; 1; 1; 4 7. 2; 2; 1; 5 8. 1; 2; 1; 4 002 10.0 points Consider the reaction CaCN 2 + 3 H 2 O CaCO 3 + 2 NH 3 . How much CaCO 3 is produced i± 47.5 moles NH 3 are produced? 1. 9500 g 2. 2380 g 3. 0.950 g 4. 4750 g 5. 23.8 g 6. 0.238 g 003 10.0 points Consider the reaction N 2 + 3 H 2 2 NH 3 . How much NH 3 can be produced ±rom the reaction o± 74.2 g o± N 2 and 14.0 moles o± H 2 ? 1. 1 . 26 × 10 25 molecules 2. 1 . 59 × 10 24 molecules 3. 5 . 62 × 10 24 molecules 4. 1 . 69 × 10 25 molecules 5. 3 . 19 × 10 24 molecules 004 10.0 points Consider the reaction: N 2 + 3 H 2 2 NH 3 What is the percent yield i± 45.5 grams o± NH 3 is produced upon reaction o± 13.0 moles N 2 and 29.0 moles H 2 ? 1. 27 . 6% 2. 20 . 6% 3. 13 . 8% 4. 6 . 14% 5. 35 . 4% 6. 10 . 3% 005 10.0 points I± the reaction 2H 2 O 2 2H 2 O + O 2 has a 45% yield, what is the molarity o± the H 2 O 2 solution i± 2.5 L o± this solution pro- duces 150 g o± O 2 ?

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Version 462 – Practice Exam 1 Fall 2008 – Brodbelt – (53765) 2 1. 0.083 M 2. 9.4 M 3. Not enough information is given. 4.
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Practice Exam 1 Fall 2008 - Version 462 Practice Exam 1...

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