The combustion of naphthalene (C10H8), which releases 5150.10 kJ/mol of energy, is used to calibrate calorimeters. A 1.05-g sample of naphthalene is burned in a calorimeter producing a temperature rise of 3.86 °C. Burning a 1.83-g sample of coal in the same calorimeter causes a temperature change of 4.90 °C. What is the energy density of the coal?

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Reactive Processes

Reactive processes are the processes in which any reaction occurs. The reactions can be any combination reaction, decomposition reaction, combustion reaction, oxidation reaction, reduction reaction, neutralization reaction, displacement reaction, or double displacement reaction.