Koofer - Chem 1201 Bonus Exam 3 Electronegativity of...

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————————————————————————————————————— Chem 1201 Bonus Exam 3 ————————————————————————————————————— Electronegativity of Selected Elements H 2.1 Be 1.5 B 2.0 C 2.5 N 3.0 O 3.5 F 4.0 Li 1.0 Mg 1.2 Al 1.5 Si 1.8 P 2.1 S 2.5 Cl 3.0 Na 0.9 Ca 1.0 Ga 1.8 Ge 1.8 As 2.0 Se 2.4 Br 2.8 K 0.8 Sr 1.0 In 1.7 Sn 1.8 Sb 1.9 Te 2.1 I 2.5 Rb 0.8 Ba 0.9 Ti 1.8 Pb 1.9 Bi 1.9 Po 2.0 At 2.2 1 What happens when the temperature of a gas is increased at constant volume? ( A ) pressure does not change because pressure is not affected by temperature ( B ) pressure decreases because the frequency of collisions with the walls decreases ( C ) pressure increases because the force of the collision with the wall decreases ( D ) pressure increases because the molecules move slower ( E ) pressure increases because the frequency of collisions with the walls increases 2 Which of the following describes the actual bonding in the NO 2 molecule? Actual means thetruemolecule. ( A ) Each bond is a double bond. ( B ) Each bond is identical and is in between a single and double bond. ( C ) One bond is a triple bond, the other a single bond. ( D ) One bond is a double bond, the other is non-bonding. ( E ) One bond is a single bond the other is a double bond. 3 A gas in a 10 L container contains a mixture of 7. 52 g of N 2 and1.46gofO 2 at 367. C. Calculate the partial pressures and the total pressure of this mixture. ( A )p N 2 1. 41 atm, p O 2 0.240 atm, p tot 1. 65 atm ( B )p N 2 1. 41 atm, p O 2 0.137 atm, p tot 5. 81 atm ( C )p N 2 0.240 atm, p O 2 1. 41 atm, p tot 0.946 atm ( D )p N 2 0.808 atm, p O 2 0.137 atm, p tot 1. 65 atm ( E )p N 2 39. 5 atm, p O 2 7. 67 atm, p tot 47. 2 atm
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4 What are the products when alkali metals react with water? ( A ) superoxides ( B ) peroxides ( C ) metal salt ( D )H 2 metal hydroxide ( E ) metal oxide 5 Which of the Lewis structures in the Figure IS THE BEST for OCS? Be careful! There are several things that must be considered to make the structure the best one. Some of these Lewis structures have been incorrectly drawn! S
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Koofer - Chem 1201 Bonus Exam 3 Electronegativity of...

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