containing 150 grams of water initially at 27.4°C. If the temperature of the water increae The heat of dissolution of a solid substance was dete orimete D. гос 9. ma to 32.8°C, what is the heat of dissolution of the solid? C. an -3386 J d. 3386 J -810 J a. b. 810 J compressing How much work was done when 46 kJ of energy was spent on released 28 kJ of heat? a gas as 10. -74 kJ с. 2. a. -18 kJ d. 74 kJ b. 18 kJ 11. What is the energy change of a system as it does 12 J of work and absorbed 27 J of hew -39 J с. a. -15 J b. 15 J d. 39 J 12. Which of the following will have a standard enthalpy of formation equal to zero? NO,(g) 3. N,(g) b. CO,(g) The standard molar enthalpy of formation of calcium carbonate (CACO,) is -1206.9 kl/mol C. a. d. MgCl,(s) 13.
containing 150 grams of water initially at 27.4°C. If the temperature of the water increae The heat of dissolution of a solid substance was dete orimete D. гос 9. ma to 32.8°C, what is the heat of dissolution of the solid? C. an -3386 J d. 3386 J -810 J a. b. 810 J compressing How much work was done when 46 kJ of energy was spent on released 28 kJ of heat? a gas as 10. -74 kJ с. 2. a. -18 kJ d. 74 kJ b. 18 kJ 11. What is the energy change of a system as it does 12 J of work and absorbed 27 J of hew -39 J с. a. -15 J b. 15 J d. 39 J 12. Which of the following will have a standard enthalpy of formation equal to zero? NO,(g) 3. N,(g) b. CO,(g) The standard molar enthalpy of formation of calcium carbonate (CACO,) is -1206.9 kl/mol C. a. d. MgCl,(s) 13.
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter8: Thermochemistry
Section: Chapter Questions
Problem 31QAP: A student is asked to calculate the amount of heat involved in changing 10.0 g of liquid bromine at...
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10 11 12
Transcribed Image Text:A 7.0-gram metal sample absorbed 211 J of heat as it was heated from 28°C to 85°C. Wh
containing 150 grams of water initially at 27.4°C. If the temperature of the water increase
The heat of dissolution of a solid substance was determined using an insulated calorimete
8.
Critical
is the specific heat of the metal?
0.126 J/g-°C
0.529 J/g.°C
1.133 J/g.°C
B.
C.
1.
An
a.
d.
in
rele
b. 0.267 J/g-°C
roc
9.
ma
to 32.8°C, what is the heat of dissolution of the solid?
C.
an
-3 386 J
-810 J
a.
d. 3386 J
b.
810 J
How much work was done when 46 kJ of energy was spent on compressing a gas
released 28 kJ of heat?
10.
-74 kJ
C.
2.
-18 kJ
a.
d.
74 kJ
b.
18 kJ
11.
What is the energy change of a system as it does 12 J of work and absorbed 27 J of hear
C.
-39 J
a.
-15 J
d.
39 J
b.
15 J
12.
Which of the following will have a standard enthalpy of formation equal to zero?
NO,(g)
3.
N(g)
b. СО)
с.
a.
d.
MgCl,(s)
The standard molar enthalpy of formation of calcium carbonate (CACO,) is –1206.9 kJ/mol
What will be the enthalpy for the formation of 75 g of CACO,? (MM=100.1 g/mol)
13.
-1 206.9 kJ
-904.3 kJ
Consider the hypothetical reaction below. What is the enthalpy for its reverse reaction?
16.09 kJ
603.4 kJ
a.
C.
b.
d.
14.
A + 3B = 2C
AH=357.2 kJ
-357.2 kJ
a.
178.6 kJ
E
C.
b.
-178.6 kJ
d.
714.4 kJ
4.
15. Consider the reactions below.
5.
2A + B = 2C
AH=-115.2 kJ
6.
B + D = C
What will be the value of AH for the overall reaction below?
AH=-98.4 kJ
2A = B + 2D
-312 kJ
a.
b.
-214 kJ
16.8 kJ
d. 81.6 kJ
с.
72 Exploring Life Through Science-General Chemistry 2
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