You pour a cup of tea that has a volume of 128 mL and is initially 92.1 °C. You place a stainless steel spoon that has a mass of 42.13 g and a temperature of 20.92 °C into the coffee. What is the final temperature °C of the coffee and spoon at thermal equilibrium assuming no heat is lost to the surroundings? Assume the specific heat and density of coffee to be the same as water. The specific heat of the spoon is 0.466 J/g·°C. Report your answer normallly to one decimal place and do not include units.
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.
You pour a cup of tea that has a volume of 128 mL and is initially 92.1 °C. You place a stainless steel spoon that has a mass of 42.13 g and a temperature of 20.92 °C into the coffee. What is the final temperature °C of the coffee and spoon at thermal equilibrium assuming no heat is lost to the surroundings? Assume the specific heat and density of coffee to be the same as water. The specific heat of the spoon is 0.466 J/g·°C. Report your answer normallly to one decimal place and do not include units.
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