A student is using a calorimeter to determine the specific heat of a metallic sample. She measures out 128.3 grams of her metal and heats it to 78.3 degrees Celsius. Then, she puts the sample into a calorimeter containing 14.76 grams of water at 45.8 degrees Celsius. She measures the temperature of the water in the calorimeter until the number stops changing, then records the final temperature to be 51.5 degrees Celsius. What is the specific heat of the metal? Please answer to three digits after the decimal point.
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
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