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Chemistry homework help

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Chm/109 week 7

Prepare written answers to the following exercises:

 

1.     Adapted from Exercise 106 in Ch. 14 of Introductory Chemistry:

3 questions Chemistry Homework

1. Using a thermodynamic argument, explain why it is not possible to transfer heat from a body of lower temperature to another body of higher temperature.

 

2. The reaction between H2 and O2 to form water is exothermic. However, in this reaction all H-H and O=O bonds must be broken. Where does the energy required to accomplish this come from? Also comment on the relative changes in the potential and kinetics energies of this system.

 

Chemistry Work

Q 1.

 A heater burns normal butane (n-C4H10) using 40.0 percent excess air.  Combustion is complete.  The flue gas leaves the stack at a pressure of 100 kPa and a temperature of 2600C.

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