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Chem 210 Biochemistry Final Exam ||Verified Exam!!||
Most Recent Exam 2026 Actual Complete Real Exam
Questions And Correct Answers (Verified Answers)
Already Graded A+ || Newest Exam!!!
Propanol has a normal boiling point of 97.8°C. At 400 torr,
it has a boiling point of 82.0°C. What is the heat of
vaporization?
24.9 kJ/mol
38.7 kJ/mol
12.3 kJ/mol
44.4 kJ/mol
52.7 kJ/mol - Answer-44.4 kj/mol
Calculate the energy that is required to change 50.0 g ice
at -30.0°C to a liquid at 73.0°C. The heat of fusion = 333
J/g, the heat of vaporization = 2256 J/g, and the specific
heat capacities of ice = 2.06 J/gK and liquid water = 4.184
J/gK.
1.31 × 105 J
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2.14 × 104 J
1.66 × 104 J
3.50 × 104 J
6.59 × 103 J - Answer-3.50 × 104 J
How much energy must be removed from a 125 g sample
of benzene (molar mass= 78.11 g/mol) at 425.0 K to liquify
the sample and lower the temperature to 335.0 K? The
following physical data may be useful.
ΔHvap = 33.9 kJ/mol
ΔHfus = 9.8 kJ/mol
Cliq = 1.73 J/g°C
Cgas = 1.06 J/g°C
Csol = 1.51 J/g°C
Tmelting = 279.0 K
Tboiling = 353.0 K - Answer-67.7 kJ
A hypothetical substance has a melting point of −10°C and
a boiling point of 155°C. If this substance is heated from
2°C to the gas at 155°C, which of the following would be
used in the calculation:
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1. specific heat capacity of the solid
2. heat of fusion
3. specific heat capacity of the liquid
4. heat of vaporization
5. specific heat capacity of the gas - Answer-C and D only
A substance has a triple point at −24.5 ∘C and 225 mmHg.
What is most likely to happen to a solid sample of the
substance as it is warmed from −35 ∘C to 5 ∘C at a
pressure of 210 mmHg?
Nothing (the solid will remain as a solid).
The solid will sublime into a gas.
The solid will melt into a liquid. - Answer-The solid will
sublime into a gas
The hydrides of group 5A are NH3, PH3, AsH3, and SbH3.
Arrange them from highest to lowest boiling point. -
Answer-Highest: Nh3 SbH3 AsH3 PH3
What is the strongest type of intermolecular force present
in H2? - Answer-Dispersion
, 4|Page
Identify the compound that does not have dipole-dipole
forces as its strongest force. - Answer-Co2
Which of the following must be overcome during the
boiling of acetonitrile, CH3CN?
1. dispersion forces
2. dipole-dipole forces
3. hydrogen bonds - Answer-1 and 2
Place the following compounds in order of decreasing
strength of intermolecular forces.
I. CH3CH2CH2CH2CH2CH3 II. (CH3)3CCH3 III.
(CH3)3CCH2CH3 - Answer-I>III>II
What type of intermolecular force causes the dissolution of
KF in water? - Answer-Ion-dipole force
What Inter molecular forces are present in: HBr - Answer-
dispersion forces and dipole-dipole forces
Chem 210 Biochemistry Final Exam ||Verified Exam!!||
Most Recent Exam 2026 Actual Complete Real Exam
Questions And Correct Answers (Verified Answers)
Already Graded A+ || Newest Exam!!!
Propanol has a normal boiling point of 97.8°C. At 400 torr,
it has a boiling point of 82.0°C. What is the heat of
vaporization?
24.9 kJ/mol
38.7 kJ/mol
12.3 kJ/mol
44.4 kJ/mol
52.7 kJ/mol - Answer-44.4 kj/mol
Calculate the energy that is required to change 50.0 g ice
at -30.0°C to a liquid at 73.0°C. The heat of fusion = 333
J/g, the heat of vaporization = 2256 J/g, and the specific
heat capacities of ice = 2.06 J/gK and liquid water = 4.184
J/gK.
1.31 × 105 J
,2|Page
2.14 × 104 J
1.66 × 104 J
3.50 × 104 J
6.59 × 103 J - Answer-3.50 × 104 J
How much energy must be removed from a 125 g sample
of benzene (molar mass= 78.11 g/mol) at 425.0 K to liquify
the sample and lower the temperature to 335.0 K? The
following physical data may be useful.
ΔHvap = 33.9 kJ/mol
ΔHfus = 9.8 kJ/mol
Cliq = 1.73 J/g°C
Cgas = 1.06 J/g°C
Csol = 1.51 J/g°C
Tmelting = 279.0 K
Tboiling = 353.0 K - Answer-67.7 kJ
A hypothetical substance has a melting point of −10°C and
a boiling point of 155°C. If this substance is heated from
2°C to the gas at 155°C, which of the following would be
used in the calculation:
,3|Page
1. specific heat capacity of the solid
2. heat of fusion
3. specific heat capacity of the liquid
4. heat of vaporization
5. specific heat capacity of the gas - Answer-C and D only
A substance has a triple point at −24.5 ∘C and 225 mmHg.
What is most likely to happen to a solid sample of the
substance as it is warmed from −35 ∘C to 5 ∘C at a
pressure of 210 mmHg?
Nothing (the solid will remain as a solid).
The solid will sublime into a gas.
The solid will melt into a liquid. - Answer-The solid will
sublime into a gas
The hydrides of group 5A are NH3, PH3, AsH3, and SbH3.
Arrange them from highest to lowest boiling point. -
Answer-Highest: Nh3 SbH3 AsH3 PH3
What is the strongest type of intermolecular force present
in H2? - Answer-Dispersion
, 4|Page
Identify the compound that does not have dipole-dipole
forces as its strongest force. - Answer-Co2
Which of the following must be overcome during the
boiling of acetonitrile, CH3CN?
1. dispersion forces
2. dipole-dipole forces
3. hydrogen bonds - Answer-1 and 2
Place the following compounds in order of decreasing
strength of intermolecular forces.
I. CH3CH2CH2CH2CH2CH3 II. (CH3)3CCH3 III.
(CH3)3CCH2CH3 - Answer-I>III>II
What type of intermolecular force causes the dissolution of
KF in water? - Answer-Ion-dipole force
What Inter molecular forces are present in: HBr - Answer-
dispersion forces and dipole-dipole forces
