What's In A. Do you know what is a chemical equation dear learner? Below is a sample of a chemical equation and its parts. Reactants Product 2H2+02 w 2H2O Coefficient Coefficient 2H2+02 2H20 Number of atoms *Note: To obtain the total number of molecules is to multiply the number of atoms to the coefficient. A. Answer the following questions in a separate sheet of paper, 1.) What are the reactants in the chemical equation? 2.) What is the product? 3.) What is the coefficient of Hydrogen in the reactant? 4.) What is the coefficient of Hydrogen in the product? 5.) What is the coefficient of Oxygen in the reactant? 6.) What is the coefficient of Oxygen in the product? 7.) How many Hydrogen molecules present in the reactant side? 8.) How many Hydrogen molecules present in the product side? 9.) How many Oxygen molecules present in the reactant side? 10.) How many Oxygen molecules present in the product síde?
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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