Describe how temperature change, both positive and negative, is a determinant of heat. 2.) If a 50g sample of water at a temperature of 100 oC is added to a 25g sample of water at 25 oC, what would be the equilibrium temperature? The specific heat of water is 4.184 J/g oC. 3.) How does this lab demonstrate the First Law of Thermodynamics? 4.) Describe the relationship between the metal and water in terms of which is exothermic and which is endothermic.
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.
1.) Describe how temperature change, both positive and negative, is a determinant of heat.
2.) If a 50g sample of water at a temperature of 100 oC is added to a 25g sample of water at 25 oC, what would be the equilibrium temperature? The specific heat of water is 4.184 J/g oC.
3.) How does this lab demonstrate the First Law of
4.) Describe the relationship between the metal and water in terms of which is exothermic and which is endothermic.
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