DATA TABLE Mass of test tube Mass of test tube & metal Mass of metal Mass of calorimeter Mass of calorimeter & water Mass of water Temp of boiling water (metal) Temperature of water in foam cup Highest temp (after metal added) Change in water temperature (ATW) Change in metal temperature (ATM) Trial 1 19.34g 38.14g 18.8g 3.819 51.70g 47.99 206°F 98°C 72.5°F 23°C 80°f 26°C Trial 2 19.20g 37.95g 18.75g 4.269 49.30g 45.04g 96°c 72.5° 23°C 27°
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.
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