11. What is the electron configuration of the Neon (Ne) atom? 12. What is the chemical formula of the compound formed by Barium ion and sulfate ion? BaSO4 AAAAAAAAAnal 13. Write chemical symbols for the following ions: a. Sulfate ion b. Sulfur ion 14. Write the Lewis Structure for N₂ 15. Write the Lewis Structure for SC1₂ (S is the center atom) The bond in O₂ is 16. a. Non-polar covalent b. Polar covalent c. Ionic
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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