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OpenStudy (anonymous):
A reaction takes place in two steps. In the first step 12.5 cal of energy are released. In the second step, 68.2 J of energy are released and the volume of the gas expands by 14.4 L at a pressure of 12.5 atm. Given that 1 L·atm = 101.3 J, what is the overall energy change?
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