The following information is given for lead at latm: T = 1740.00°C T = 328.00°C Specific heat solid = 0.1300 J/g °C Specific heat liquid = 0.1380 J/g °C AHvap (1740.00°C) = 858.2 J/g AHfus (328.00°C) = 23.00 J/g !3! %3D A 36.60 g sample of liquid lead at 519.00°C is poured into a mold and allowed to cool to 27.00°C. How many k) of energy are released in this process? (Report the answer as a positive number.) Energy Submit Answer Retry Entire Group 9 more group attempts remaining
The following information is given for lead at latm: T = 1740.00°C T = 328.00°C Specific heat solid = 0.1300 J/g °C Specific heat liquid = 0.1380 J/g °C AHvap (1740.00°C) = 858.2 J/g AHfus (328.00°C) = 23.00 J/g !3! %3D A 36.60 g sample of liquid lead at 519.00°C is poured into a mold and allowed to cool to 27.00°C. How many k) of energy are released in this process? (Report the answer as a positive number.) Energy Submit Answer Retry Entire Group 9 more group attempts remaining
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.71QP: When steam condenses to liquid water, 2.26 kJ of heat is released per gram. The heat from 168 g of...
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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.
Question
5
Transcribed Image Text:The following information is given for ethanol at 1 atm:
T
= 78.40°C
Tm = -114.50°C
Specific heat gas = 1.430 J/g °C
Specific heat liquid = 2.460 )/g °C
AHvap (78.40°C) = 837.0 J/g
AHt (-114.50°C) = 109.0 3/g
%3!
A 28.50 g sample of liquid ethanol is initially at -34.10°C. If the sample is heated at constant pressure (P = 1 atm),
kJ of energy are needed to raise the temperature of the sample to 106.60°C.
!!
Submit Answer
Retry Entire Group
9 more group attempts remaining
Transcribed Image Text:The following information is given for lead at latm:
T
= 1740.00°C
T = 328.00°C
Specific heat solid = 0.1300 J/g °C
Specific heat liquid = 0.1380 J/g °C
AHvap (1740.00°C) = 858.2 1/g
AHfus (328.00°C) = 23.00 J/g
%3D
%3D
A 36.60 g sample of liquid lead at 519.00C is poured into a mold and allowed to cool to 27.00°C. How many k) of
energy are released in this process?
(Report the answer as a positive number.)
Energy
Submit Answer
Retry Entire Group
9 more group attempts remaining
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