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.
![1. How many moles of NaOH (FW = 40g/mol) are there in 2.0 grams NaOH?
2. How many grams of Na2CO3 (FW=106g/mo10 are there in 0.50 moles Na2CO3?
3. How much does 6.02 x 1023 molecules of CO2 (FW = 44g/mol) weigh?
4. Calculate the formula weight of aluminum phosphate.
5. What is the percentage composition of the elements present in sodium carbonate?
6. Determine the empirical formula of the compound containing 87.5% nitrogen and 12.5%
H by mass.
7. What is the molecular formula of the compound if its empirical formula is HCO2 and its
molecular weight is 90.0 almu?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe9f03d03-6f13-455b-98ba-8db54568b5fa%2F630d15ed-5b7c-4610-9e23-ecaf0c2342d4%2Fkp60e2u_processed.jpeg&w=3840&q=75)
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