1. This reaction was done in a coffee cup calorimeter. The total mass of water in the coffee cup was 120.0 g and the water increased from 17.5 degrees C to 41.0 degrees C. How many KJ/mole did the reaction release? 2. There are two objects of equal mass, Object A and Object B. They are both placed in boiling water and were both removed when they reached 100 C. Object B decreased in temperature more quickly than Object A. Which has a higher specific heat capacity? Explain your reasoning. 3. A 58.0 gram block of Copper was heated from 15.0 C to 65.0 C. If 1,110 J of energy were absorbed, what is the specific heat capacity of the block?
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.
-Answer all three please
1. This reaction was done in a coffee cup calorimeter. The total mass of water in the coffee cup was 120.0 g and the water increased from 17.5 degrees C to 41.0 degrees C. How many KJ/mole did the reaction release?
2. There are two objects of equal mass, Object A and Object B. They are both placed in boiling water and were both removed when they reached 100 C. Object B decreased in temperature more quickly than Object A. Which has a higher specific heat capacity? Explain your reasoning.
3. A 58.0 gram block of Copper was heated from 15.0 C to 65.0 C. If 1,110 J of energy were absorbed, what is the specific heat capacity of the block?
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