Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 31E: When a 0.740-g sample of trinitrotoluene (TNT), C7H5N2O6, is burned in a bomb calorimeter, the...
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Q 3 please
![(1) The molar mass of a gas (g/mol) that has a density of 0.42 g/L at 37 °C and 0.2 atm is:
(A) 44.0
(B) 80.1
(D) 53.4
(C) 22.0
(2) Which of the following substances (all) gets the warmest (y) when absorbs the same
amount of heat?
(A) H₂O(1) (S = 4.18 J/g. °C)
(C) Polystyrene (S = 8.31 J/g. °C)
(3) Which of the following is not a unit of temperature?
(A) Calori
(B) Kelvin
(B) Fe(s) (S = 0.45 J/g. °C)
(D) Carbon graphite (S = 0.71 J/g. °C)
(C) Kilojoule
(D) Kilopascal
(4) A 32 g of O2(g) is mixed with 12 g He(g), and 3 mole of CO(g) in closed container. If the total
pressure in the container is 9 atm. The PHe (atm) is:
(A) 0.96
(B) 1.50
(C) 3.8
(D) 1.29
(5) Consider the reaction:
2H2(g) + O2(g) → 2H₂O(1)
The heat produced (KJ) to produce 1.0 mole of H₂O(1) is:
(A) -572
(B)-286
AH = -572 KJ
(C) -57.2
(6) The pressure of the gas (mmHg) given by the following manometer is:
(A) 793.0
(B) 751.2
(C) 758.8
(D) 717.0
gas
(D) -28.6
Patm-755mmHg
h 3.8
cm](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F48ed58b1-dcb7-4b16-9209-abaf1a4086d3%2Fe42b49bc-6d7a-4273-84b9-1ea3bf54b473%2Fvc40x7l_processed.jpeg&w=3840&q=75)
Transcribed Image Text:(1) The molar mass of a gas (g/mol) that has a density of 0.42 g/L at 37 °C and 0.2 atm is:
(A) 44.0
(B) 80.1
(D) 53.4
(C) 22.0
(2) Which of the following substances (all) gets the warmest (y) when absorbs the same
amount of heat?
(A) H₂O(1) (S = 4.18 J/g. °C)
(C) Polystyrene (S = 8.31 J/g. °C)
(3) Which of the following is not a unit of temperature?
(A) Calori
(B) Kelvin
(B) Fe(s) (S = 0.45 J/g. °C)
(D) Carbon graphite (S = 0.71 J/g. °C)
(C) Kilojoule
(D) Kilopascal
(4) A 32 g of O2(g) is mixed with 12 g He(g), and 3 mole of CO(g) in closed container. If the total
pressure in the container is 9 atm. The PHe (atm) is:
(A) 0.96
(B) 1.50
(C) 3.8
(D) 1.29
(5) Consider the reaction:
2H2(g) + O2(g) → 2H₂O(1)
The heat produced (KJ) to produce 1.0 mole of H₂O(1) is:
(A) -572
(B)-286
AH = -572 KJ
(C) -57.2
(6) The pressure of the gas (mmHg) given by the following manometer is:
(A) 793.0
(B) 751.2
(C) 758.8
(D) 717.0
gas
(D) -28.6
Patm-755mmHg
h 3.8
cm
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