Quiz 3 AU09 - CHM-201 Quiz 3 AU09 1/2 CHM-201-03 Prof. Lin...

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CHM-201 Quiz 3 AU09 1/2 CHM-201-03 Quiz 3 (Chapter 3) October 5, 2009 Prof. Lin Name: Note: There is reference information on page 2. 1. SHORT ANSWER. Answer the questions or perform the calculations (18 points): a) What percent by mass of oxygen is present in carbon monoxide, CO? (2 points) b) What is the coefficient of O 2 when the following equation is completed and balanced? (2 points) C 4 H 8 O 2 + O 2 → H 2 O + CO 2 If 10 moles of O 2 were consumed how many moles of CO 2 were produced? (2 points) c) If you have 4 million molecules of CH 4 and 2 million molecules of O 2 , and they react as show: CH 4 + 2O 2 → CO 2 + 2H 2 O Which reactant is limiting? (2 points) And how many molecules of CO 2 will be produced? (2 points) d) Balance the following chemical equation: P 4 O 10 + H 2 O H 3 PO 4 (2 points) e) How many molecules of CO 2 are there in 1.64 moles of CO 2 ? (2 points) f) Magnesium burns in air with a dazzling brilliance to produce magnesium oxide: 2Mg (s) + O 2 (g) →
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This note was uploaded on 02/10/2011 for the course CHEM 201 taught by Professor Griffen during the Fall '09 term at Bunker Hill.

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Quiz 3 AU09 - CHM-201 Quiz 3 AU09 1/2 CHM-201-03 Prof. Lin...

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