Image: Graph, Energy on X axis, Temp on Y axis. Horizontal line labelled "A" beginning near bottom of Y-axis. At end of this line, there is a line sloping up and to the right labelled "B". At the end of this line there is another horizontal line labelled "C". End of Image. Hg (MW = 200.59 g/mol) Melting point = minus 38.83 degrees C Boiling point = 356.73 degrees C Heat of fusion = 2.390 kJ/mol Heat capacity of liquid = 0.1395 J/g/K Heat of vaporization = 59.20 kJ/mol Find A, B and C and the total energy required (in that order) in Joules (express as 'J'). Assume 100.0 g of substance. A, B and C should have four significant figures.
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.
Image: Graph, Energy on X axis, Temp on Y axis. Horizontal line labelled "A" beginning near bottom of Y-axis. At end of this line, there is a line sloping up and to the right labelled "B". At the end of this line there is another horizontal line labelled "C". End of Image.
Hg (MW = 200.59 g/mol)
Melting point = minus 38.83 degrees C
Boiling point = 356.73 degrees C
Heat of fusion = 2.390 kJ/mol
Heat capacity of liquid = 0.1395 J/g/K
Heat of vaporization = 59.20 kJ/mol
Find A, B and C and the total energy required (in that order) in Joules (express as 'J'). Assume 100.0 g of substance. A, B and C should have four significant figures.
When entering your values import your answer followed by a space then J
Example: 3450. J
Notice that in this particular example a decimal point was included after 3450 to indicate that the zero is significant. If the answer does not need a decimal do not include one.
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