EXAM 1 chem 2

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Jump to Navigation Frame   Your location: Assessments  ›  View All Submissions  › View Attempt  View Attempt 1 of 1  Title: Exam 1 Started: February 24, 2010 4:08 PM Submitted: February 24, 2010 4:57 PM Time spent: 00:49:42  Total score: 19/20 = 95%   Total score adjusted by 0.0  Maximum possible score: 20  1.   Which type of intermolecular force ("interparticle force") is the most important in CH 2 I 2 (l)?    Student Response Value Correct Answer 1.  London Dispersion    2.  Dipole-dipole forces 100%     3.  Hydrogen bonds    4.  Ion-dipole forces    5.  Ionic bonds    Score: 1/1    2.   Which of the following substances would be expected to have the highest heat of fusion? 
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  Score: 1/1    3.   How much energy in J is needed to convert 99 g of solid ethanol at -130  o C to liquid at -85 o C. You might need to  know that: mp = -114  o C and bp = 78 o C The heat of fusion is 4.6 kJ/mol and the heat of vaporization is 46.0 kJ/mol. Finally, the specific heats of the solid, liquid and gas are, respectively 2.1, 3.2 and 1.8 J/g 
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EXAM 1 chem 2 - JumptoNavigationFrame

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