A 50 g sample of a metal is heated to 75.0 C and placed into 50 g of water at 25.0 C. The temperature of the water rose to reach a final temperature of 26.4 C. a. What is the final temperature of the metal? Justify your reasoning. b. Which substance had the larger change in temperature, the metal all the water? c. Which substance had the largest change in energy, the metal or the water? Justify your answer. d. Explain on the particulate level has a temperature of the water increases after edition of the middle. Your answers to explain the role of kinetic energy.
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.
A 50 g sample of a metal is heated to 75.0 C and placed into 50 g of water at 25.0 C. The temperature of the water rose to reach a final temperature of 26.4 C.
a. What is the final temperature of the metal? Justify your reasoning.
b. Which substance had the larger change in temperature, the metal all the water?
c. Which substance had the largest change in energy, the metal or the water? Justify your answer.
d. Explain on the particulate level has a temperature of the water increases after edition of the middle. Your answers to explain the role of kinetic energy.
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