1. How many moles of water are produced from 4.18 moles of pentane gas, (CsH12)? CsH12 + 802 _, 5COz + 6H2O 1. 2. How many grams of H₂O are produced from 6.79 moles of H₂O₂? 2 H₂O₂ → 2H₂O + O₂ 2 3. How many grams of Fe must react to produce 2.400 moles of Fe₂O3? 4Fe +30₂ 2 Fe₂O3 3. 4. How many grams of CO₂ are produced from 178.0g of O₂? CsH12 + 802 5CO₂ + 6H₂O 5. How many grams of Fe are needed to react with 12.5 grams of oxygen gas? 4Fe +30₂ 2 Fe₂O₂
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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