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.
I need to find Q in joules (J) for both experiment #1 and #2 but I'm unsure of how to write the equation they gave me
![Experiment #1Experiment #2
Initial Temperature, To
Final Temperature, J
Temperature Change, AT 11.7
Mass of magnesium, mMg
20.5
20.5
32.2
42.3
21.8
0.138 g
0.241 g](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F35965c83-49a0-4a61-abb5-b01d5b731ec3%2Fdca2ede1-ddb6-4c6e-87ae-12ea2f457f69%2Frv60l7o_processed.png&w=3840&q=75)
![Calculation of Molar Heat of Reaction
The heat, Q, absorbed by the calorimeter and its contents during the course of the
reaction can be calculated from the change in temperature, AT, using equation 1.
Q = Ccal AT + m Csp AT
Eq. 1
Here Ccal is the heat capacity of the Styrofoam calorimeter, m is the mass of the
calorimeter contents, and Csp is the specific heat of those contents. You may take Ccal
to equal 20.0 J/°C. Since the contents are mostly water, which has a density of 1.0 g/mL,
the mass of the contents, m, can be approximated as 50.0 g. You may also take the
specific heat, Csp, of the solution to be that of pure water (4.184 J/g°C).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F35965c83-49a0-4a61-abb5-b01d5b731ec3%2Fdca2ede1-ddb6-4c6e-87ae-12ea2f457f69%2F0er6w6e_processed.png&w=3840&q=75)
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