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May 6, 2015

Homework Help: chem Help please!

Posted by Kjd on Saturday, October 20, 2012 at 3:28pm.

A water heater is fueled by the combustion of propane as described by the following reaction:
C3H8(g) + 5 O2(g) --> 3 CO2(g) + 4 H2O(l)

a) Determine how much heat is released if 11.2 moles of propane are burned at 298 K and at a constant pressure of 1.00 bar.

b) Assume that the water heater contains 146 L of water at an initial temperature of 25.0 degreeC. What will the water temperature rise to if all of the heat produced under the previous conditions is used to heat the water?

ANS:
a) -2.49x10^7 J
b) 65.8 degreeC

Please explain steps. Thank you! Much help is appreciated.

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