General Chemistry - Midterm 2 2008 Solutions

General Chemistry - Midterm 2 2008 Solutions - Dr Rashmi...

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October 27, 2008 Dr. Rashmi Venkateswaran CHM 1301 CHM 1311 B GENERAL CHEMISTRY QUIZ 2 STUDENT NAME S T U D E N T I D . N o . DEMONSTRATOR’S NAME: LAB DAY: Tuesday aft Tuesday night Wednesday Thursday Friday COURSE CODE: CHM 1301 CHM 1311B CONSTANTS R = 8.314 J/molK = 0.08206 L atm/molK 1 atm = 760 Torr = 101.325 kPa N A = 6.022 x 10 23 mol -1 c water = 4.184 J/g°C There are 9 pages in the quiz including the cover, equations and periodic table. Check and make sure you have answered each question before handing in the quiz. PLEASE use a pen!! Box, underline or highlight your FINAL answer. The quiz is out of 50 points. CLEARLY explain your thinking… USE UNITS!
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(10) Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics in humans. The value of comb for dimethylphthalate (C 10 H 10 O 4 ) is 4685 kJ/mol. Assume that 1.00 g of dimethylphthalate is combusted in a calorimeter whose heat capacity is 7.854 kJ/°C at 20.215 °C. What is the final temperature of the calorimeter? The combustion of 0.4196 g of a hydrocarbon releases 17.55 kJ of heat. In the combustion, 1.419 g of carbon dioxide and 0.290 g of water are formed.
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General Chemistry - Midterm 2 2008 Solutions - Dr Rashmi...

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