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16 Nov 2021

Given information

In measurement A the reaction produces   of heat, and in measurement B the reaction produces    of heat.

Step-by-step explanation

Step 1.

Measurement A corresponds to constant volume because measurements A emits a higher amount of heat. when a fuel is burned under constant volume all of the energy released by the combustion reaction is evolved as heat.

   

Measurement B corresponds to constant pressure. When a fuel is burned under constant pressure, some of the energy released does work on the atmosphere by expanding against it. Less energy is manifest as heat due to this work.

    

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