May 6, 2015

Homework Help: chemistry

Posted by james on Monday, November 10, 2008 at 4:42pm.

Triple Point Clicker Challenge
The Lewis structure for nitroglycerin is shown below. 1.00 mL of liquid
nitroglycerin is placed in a sealed, reinforced, insulated steel box measuring
1.00 m on each side and filled with argon gas at 15.0 oC and 1.00 atm. The
density of nitroglycerin is 1.13 kg/dm3 at 15.0 oC. The specific heat capacity of
argon gas is 0.310 kJ/kg.K. When the box is shaken, the nitroglycerin
completely decomposes into nitrogen gas, carbon dioxide gas, water vapor, and
oxygen gas.
What are the predicted bond angles around the nitrogen atoms?
Using the bond energies in Table 8.6, what is the energy change upon
decomposition of this nitroglycerin sample?
Assume that the mixture of gases produced has the same approximate specific
heat capacity as argon and the gas mixture absorbs all the heat energy
produced in the reaction. Assume that the steel box absorbs no energy. What is
the final partial pressure of carbon dioxide?
1) 120o, -27700 kJ, 1.23 atm
2) 120o, -34.5 kJ, 0.000433 atm
3) 120o, -138 kJ, 0.999 atm
4) 109.5o, -138 kJ, 0.000433 atm
5) 109.5o, -34.5 kJ, 1.23 atm
6) 109.5o, -27700 kJ, 0.999 atm
7) 90o, -27700 kJ, 0.999 atm
8) 90o, -34.5 kJ, 1.23 atm
9) 90o, -138 kJ, 0.000433 atm

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