access the section in your e Text. Part A Suppose that 1.05 g of rubbing alcohol (C, H3 O) evaporates from a 72.0 g aluminum block. If the aluminum block is initially at 25 ° C, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25 °C. The heat of vaporization of the alcohol at 25 °C is 45.4 kJ/mol, the specific heat of aluminum is 0.903 J/g.°C. Express your answer using two significant figures. • View Available Hint(s) ? T = 37 °C X Incorrect; Try Again; 5 attempts remaining Evaporation is an endothermic process. Consider what happens to the temperature at the surface of the skin (or any other object) as a liquid such as rubbing alcohol evaporates. If the temperature decreases, then the final temperature should be less than the initial temperature of the object. Take this into account when calculating the final temperature of the block.
access the section in your e Text. Part A Suppose that 1.05 g of rubbing alcohol (C, H3 O) evaporates from a 72.0 g aluminum block. If the aluminum block is initially at 25 ° C, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25 °C. The heat of vaporization of the alcohol at 25 °C is 45.4 kJ/mol, the specific heat of aluminum is 0.903 J/g.°C. Express your answer using two significant figures. • View Available Hint(s) ? T = 37 °C X Incorrect; Try Again; 5 attempts remaining Evaporation is an endothermic process. Consider what happens to the temperature at the surface of the skin (or any other object) as a liquid such as rubbing alcohol evaporates. If the temperature decreases, then the final temperature should be less than the initial temperature of the object. Take this into account when calculating the final temperature of the block.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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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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Transcribed Image Text:access the section in your eText.
Part A
of rubbing alcohol (C3H3 O)
Suppose that 1.05
evaporates from a 72.0 g aluminum block.
If the aluminum block is initially at 25 °C, what is the final temperature of the block after the evaporation of
the alcohol? Assume that the heat required for the vaporization of the alcohol comes only from the
aluminum block and that the alcohol vaporizes at 25 °C. The heat of vaporization of the alcohol at 25 °C is
45.4 kJ/mol, the specific heat of aluminum is 0.903 J/g.°C.
Express your answer using two significant figures.
• View Available Hint(s)
T = 37
°C
X Incorrect; Try Again; 5 attempts remaining
Evaporation is an endothermic process. Consider what happens to the temperature at the surface
of the skin (or any other object) as a liquid such as rubbing alcohol evaporates. If the temperature
decreases, then the final temperature should be less th
Take this into account when calculating the final temperature of the block.
the initial temperature of
object.
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