Mail-Scheffel, Reagan - Outlook X → с STARTING AMOUNT 68°F Clear app.101edu.co X BIO 120 LAB - Google Docs 1380 ADD FACTOR x( ) 2.30 ▬▬▬▬ ■ 2770 X What is the change in enthalpy in kilojoules when 2.30 mol of Mg solid is completely reacted according to the following reaction? 2 Mg(s) + O2(g) →→→ 2 MgO(s) AH = -1204 kJ 24.31 Content Question 21 of 37 40.31 6.022 x 1023 1 -1204 -2770 N 2 X ANSWER Day Aktiv Chemistry 0.001 -1380 32.00 RESET 3 1000 5540 X + -5540 ABP R Submit + X 9:45 PM 11/4/2022
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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