(s) - 2Fe (s) + 3CO2 (g) 3Fe (s) + 4CO2(s) - 4CO (g) + Fe304(s) ΔΗ--28.0 k the enthalpy of the reaction of Fe2O3 with CO AH = +12.5 kJ 3FE203 (s) + CO (g) - CO2 (g) + 2FE3O4 (s) is kJ. A) +109 B) -15.5 E) 40.5 C) -109 12) Given the data in the table below, AH°rxn for the reaction D) -59.0 12) D 3NO2 (g) + H2O (1) – 2HNO3 (aq) + NO (g) is kJ. Substance AH°f (kJ/mol) H2O (1) NO (g) NO2 (g) -286 90 34 HNO3 (aq) -207 NH3 (g) -46 A) 140 D) -140 E) -508 B) 64 C) -64 13) B which the temperature of 13) A sample of calcium carbonate [CACO3 (s)] absorbs 40.3 J of heat, upon the sample increases from 20.8 °C to 27.3 °C. If the specific heat of calcium carbonate is 0.82 J/g-K, what is the mass (in grams) of the sample? A) 5.1 g B) 7.6 g C) -7.6 g D) 0.13 g E) 5.3 g 14) D 14) The temperature of a 35.1 g sample of iron increases from 24.5 °C to 31.8 °C. If the specific heat of iron is 0.450 J/g-K, how many joules of heat are absorbed? A) 0.722 J C) -115 J D) 115 J E) 3.29 J B) 0.0936 J SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 15) 455SK 15) The AHrxn for the combustion of methane is -890.0 kJ. How much heat energy (kJ) is released if 82.1 grams of methane are burned in an excess amount of oxygen? 3 otoltzfus • M
(s) - 2Fe (s) + 3CO2 (g) 3Fe (s) + 4CO2(s) - 4CO (g) + Fe304(s) ΔΗ--28.0 k the enthalpy of the reaction of Fe2O3 with CO AH = +12.5 kJ 3FE203 (s) + CO (g) - CO2 (g) + 2FE3O4 (s) is kJ. A) +109 B) -15.5 E) 40.5 C) -109 12) Given the data in the table below, AH°rxn for the reaction D) -59.0 12) D 3NO2 (g) + H2O (1) – 2HNO3 (aq) + NO (g) is kJ. Substance AH°f (kJ/mol) H2O (1) NO (g) NO2 (g) -286 90 34 HNO3 (aq) -207 NH3 (g) -46 A) 140 D) -140 E) -508 B) 64 C) -64 13) B which the temperature of 13) A sample of calcium carbonate [CACO3 (s)] absorbs 40.3 J of heat, upon the sample increases from 20.8 °C to 27.3 °C. If the specific heat of calcium carbonate is 0.82 J/g-K, what is the mass (in grams) of the sample? A) 5.1 g B) 7.6 g C) -7.6 g D) 0.13 g E) 5.3 g 14) D 14) The temperature of a 35.1 g sample of iron increases from 24.5 °C to 31.8 °C. If the specific heat of iron is 0.450 J/g-K, how many joules of heat are absorbed? A) 0.722 J C) -115 J D) 115 J E) 3.29 J B) 0.0936 J SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 15) 455SK 15) The AHrxn for the combustion of methane is -890.0 kJ. How much heat energy (kJ) is released if 82.1 grams of methane are burned in an excess amount of oxygen? 3 otoltzfus • M
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 5.37QE: One step in the manufacturing of sulfuric acid is the conversion of SO2(g) to SO3(g). The...
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Question
Question 14
![(s) - 2Fe (s) + 3CO2 (g)
3Fe (s) + 4CO2(s) - 4CO (g) + Fe304(s)
ΔΗ--28.0 k
the enthalpy of the reaction of Fe2O3 with CO
AH = +12.5 kJ
3FE203 (s) + CO (g) - CO2 (g) + 2FE3O4 (s)
is
kJ.
A) +109
B) -15.5
E) 40.5
C) -109
12) Given the data in the table below, AH°rxn for the reaction
D) -59.0
12) D
3NO2 (g) + H2O (1) – 2HNO3 (aq) + NO (g)
is
kJ.
Substance AH°f (kJ/mol)
H2O (1)
NO (g)
NO2 (g)
-286
90
34
HNO3 (aq)
-207
NH3 (g)
-46
A) 140
D) -140
E) -508
B) 64
C) -64
13) B
which the temperature of
13) A sample of calcium carbonate [CACO3 (s)] absorbs 40.3 J of heat, upon
the sample increases from 20.8 °C to 27.3 °C. If the specific heat of calcium carbonate is 0.82 J/g-K,
what is the mass (in grams) of the sample?
A) 5.1 g
B) 7.6 g
C) -7.6 g
D) 0.13 g
E) 5.3 g
14) D
14) The temperature of a 35.1 g sample of iron increases from 24.5 °C to 31.8 °C. If the specific heat of
iron is 0.450 J/g-K, how many joules of heat are absorbed?
A) 0.722 J
C) -115 J
D) 115 J
E) 3.29 J
B) 0.0936 J
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
15) 455SK
15) The AHrxn for the combustion of methane is -890.0 kJ. How much heat energy (kJ) is
released if 82.1 grams of methane are burned in an excess amount of oxygen?
3
otoltzfus • M](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1cdef31d-0fd6-49ca-a823-5c1cf3cbca2c%2F87187cd3-b27e-49bc-b11e-017d1b250b47%2Fnx8cdhb.jpeg&w=3840&q=75)
Transcribed Image Text:(s) - 2Fe (s) + 3CO2 (g)
3Fe (s) + 4CO2(s) - 4CO (g) + Fe304(s)
ΔΗ--28.0 k
the enthalpy of the reaction of Fe2O3 with CO
AH = +12.5 kJ
3FE203 (s) + CO (g) - CO2 (g) + 2FE3O4 (s)
is
kJ.
A) +109
B) -15.5
E) 40.5
C) -109
12) Given the data in the table below, AH°rxn for the reaction
D) -59.0
12) D
3NO2 (g) + H2O (1) – 2HNO3 (aq) + NO (g)
is
kJ.
Substance AH°f (kJ/mol)
H2O (1)
NO (g)
NO2 (g)
-286
90
34
HNO3 (aq)
-207
NH3 (g)
-46
A) 140
D) -140
E) -508
B) 64
C) -64
13) B
which the temperature of
13) A sample of calcium carbonate [CACO3 (s)] absorbs 40.3 J of heat, upon
the sample increases from 20.8 °C to 27.3 °C. If the specific heat of calcium carbonate is 0.82 J/g-K,
what is the mass (in grams) of the sample?
A) 5.1 g
B) 7.6 g
C) -7.6 g
D) 0.13 g
E) 5.3 g
14) D
14) The temperature of a 35.1 g sample of iron increases from 24.5 °C to 31.8 °C. If the specific heat of
iron is 0.450 J/g-K, how many joules of heat are absorbed?
A) 0.722 J
C) -115 J
D) 115 J
E) 3.29 J
B) 0.0936 J
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
15) 455SK
15) The AHrxn for the combustion of methane is -890.0 kJ. How much heat energy (kJ) is
released if 82.1 grams of methane are burned in an excess amount of oxygen?
3
otoltzfus • M
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