Practice Question - Chapter 8 (States of Matter) 19B. For the gases plotted in the figure, what is known? (A) Gas b is hotter than gas a. (B) Gas c is lighter than gas d. solliod res If all of the gases are the same gas, gas d is the coldest. (C) If all of the gases are at the same temperature, gas a is the heaviest. (D) Work: Relative number of particles a 500 bio 201612) 8 191950-noitz9u0919 Holy D bns W loq slog 60-3127 201 20639 1000 1500 Molecular speed (m/s) (401-80 c)2-102 rentrup your 992 sel (200-200 25-8109-anolles 0819 Imaxe Isnit tuoy no oul bood 2000 158 800 (8) (0) 2500 10 010101
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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