Consider the following specific heats of metals.Metal Specific Heatcopper 0.385 J/(g·°C)magnesium 1.02 J/(g·°C)Mercury 0.138 J/(g·°C)Silver 0.237 J/(g·°C)Four 25-g samples, one of each metal, and four insulated containers with identical water volumes, all start out at room temperature. Now suppose you add exactly the same quantity of heat to each metal sample. Then you place the hot metal samples in different containers of water (that all have the same volume of water). Which of the answers below is true?a The water with the copper will be the hottest.b The water with the magnesium will be the hottest.c The water with the mercury will be the hottest.d The water with the silver will be the hottest.e The temperature of the water will be the same in all the cups.
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.
Consider the following specific heats of metals.
Metal Specific Heat
copper 0.385 J/(g·°C)
magnesium 1.02 J/(g·°C)
Mercury 0.138 J/(g·°C)
Silver 0.237 J/(g·°C)
Four 25-g samples, one of each metal, and four insulated containers with identical water volumes, all start out at room temperature. Now suppose you add exactly the same quantity of heat to each metal sample. Then you place the hot metal samples in different containers of water (that all have the same volume of water). Which of the answers below is true?
a The water with the copper will be the hottest.
b The water with the magnesium will be the hottest.
c The water with the mercury will be the hottest.
d The water with the silver will be the hottest.
e The temperature of the water will be the same in all the cups.
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