ORE HEAT PRACTICE The data below refers to an unknown substance, X. Melting point Boiling Heat of Heat of Point Fusion Vaporization 695 kJ/g 425 kJ/g 1. Draw a heating curve for substance X, going from 32.0°C 112.0°C 125 Call formulas used to calculate heat. 112°C 32 °C- E gomblik! F Em SS AT SH SH Capacity (solid) (liquid) 2.3 J/gºC 5.9 J/gºC 1.1 J/gºC 15°C to 125°C on the axis below. Write in A GEMSVAT C. qm Hvap e. Find the final temperature if 150g of X, at q=ms, AT 15°C- b. Determine the amount of heat released when 15.0g of gaseous X at 112.0°C changes to liquid at 112.0°C. 9-10425K) 9=15.09x695k/g q=mal vaporization AH = 695k/g c. Determine the amount of heat necessary to convert 15.0g of solid X at-32.0°C to liquid at 32.0° C. 95 ΔΗ = d. Determine the mass of X that can be heated from-38°C to 102°C using 4500J of heat. m= AH receives 650J of heat. SH (vapor) AH-
ORE HEAT PRACTICE The data below refers to an unknown substance, X. Melting point Boiling Heat of Heat of Point Fusion Vaporization 695 kJ/g 425 kJ/g 1. Draw a heating curve for substance X, going from 32.0°C 112.0°C 125 Call formulas used to calculate heat. 112°C 32 °C- E gomblik! F Em SS AT SH SH Capacity (solid) (liquid) 2.3 J/gºC 5.9 J/gºC 1.1 J/gºC 15°C to 125°C on the axis below. Write in A GEMSVAT C. qm Hvap e. Find the final temperature if 150g of X, at q=ms, AT 15°C- b. Determine the amount of heat released when 15.0g of gaseous X at 112.0°C changes to liquid at 112.0°C. 9-10425K) 9=15.09x695k/g q=mal vaporization AH = 695k/g c. Determine the amount of heat necessary to convert 15.0g of solid X at-32.0°C to liquid at 32.0° C. 95 ΔΗ = d. Determine the mass of X that can be heated from-38°C to 102°C using 4500J of heat. m= AH receives 650J of heat. SH (vapor) AH-
Chemistry
10th Edition
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.
Question
Answer “D”
Transcribed Image Text:ORE HEAT PRACTICE
The data below refers to an unknown substance, X.
Melting
Boiling
Heat of
Heat of
Point
Fusion
point
Vaporization
695 kJ/g
425 kJ/g
1. Draw a heating curve for substance X, going from
32.0°C
112.0°C
125 Call formulas used to calculate heat.
112°C
32°C-
Eq=m Alirus /
F
Em SS AT
SH Capacity
(solid)
2.3 J/gºC
5.9 J/gºC
1.1 J/gC
15°C to 125°C on the axis below. Write in
с. дтанюров
B
q=ms, AT
SH
(liquid)
15°C-
b. Determine the amount of heat released when 15.0g of gaseous X at 112.0°C changes to liquid at
112.0°C.
9=15.09x695k/g
9-10425K)
ΔΗ =
GEMSVAT
q=mal vaporization
ΔΗ =
c. Determine the amount of heat necessary to convert 15.0g of solid X at-32.0°C to liquid at 32.0° C.
95
ΔΗ =
e. Find the final temperature if 150g of X, at 19°C, receives 650J of heat.
AH-
SH (vapor)
-695k/g
d. Determine the mass of X that can be heated from-38°C to 102°C using 4500J of heat.
m=
id
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