8) Which of the following pure substances B) H₂S A) HCI C)NH, 9) A solution was made by dissolving 3.15 g of a solute in @120.3 g of acetone. The solution boiled at 56.58° C. The boiling point of pure acetone is 55.95° C, and the Kb -1.71° C/m. What is the molecular weight of the solute? A) 140 B) 105 C) 12.7 D) 71.1 alcol (M.W. = 62.1 g/mol) antifreeze must be added to 12.0 liters of water to itu of water is 1 g/ml and Kr 1.86° C/m. 1034 ka
8) Which of the following pure substances B) H₂S A) HCI C)NH, 9) A solution was made by dissolving 3.15 g of a solute in @120.3 g of acetone. The solution boiled at 56.58° C. The boiling point of pure acetone is 55.95° C, and the Kb -1.71° C/m. What is the molecular weight of the solute? A) 140 B) 105 C) 12.7 D) 71.1 alcol (M.W. = 62.1 g/mol) antifreeze must be added to 12.0 liters of water to itu of water is 1 g/ml and Kr 1.86° C/m. 1034 ka
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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Q 9 please
![An
(molar mass of H-1, N-14g/mol), (R-0.0821 L.atm/K.mol), (The specific heat of water is 4.184J/g.°C)]
1) The volume of a sample of nitrogen N2 is 7 L at 38°C and 740 torr. What volume will it occupy at STP?
A) 7.78 L
B) 7.18 L
D)5.98 L
C) 6.90 L
2) What is the density of NH3 at 4 atm pressure and a temperature of 30°C?
A) 16.6 g/L
C) 3.36 g/L
B) 1.39 g/L
D) 2.73 g/L
3) How much heat is required to raise the temperature of 1.5 g of water from 25°C to 29°C?
A) 12.55 kJ
B) 6.27 kJ
C) 25.1 kJ
D) 40.5 kJ
4) Estimate the temperature where AG - 0 for the following reaction: (Given: AH = -155 kJ and
AS = -284.5 J/K) CAUTION: Beware of units.NH3(g) + HCl(g)-NH.CI(s)
A) 685 K
B) 545 K
C) 467 K
D) 634 K
5) Calculate AH° for the reaction:
(1) CO+Hz
(2)CO ) +H_O»
(3) CO(g) + 3H2(g) →
A) 33 kJ
6) Calculate AG for the reaction
CO(g)
CO2(g)
CO) + 1/2O2() -
A) 217.2 kJ
Which is the strongest
A) Dipole-dipole
2C+2H2O --->
C) + H₂O
H2(g) + CO2(g)
CH48) + H₂O(g)
B) 53 kJ
C(s) + 1/2O2(g)
C()+ O2(g)
CO2(g)
CH4(g) + CO2(g)
AH-140 kJ
AH 41kJ
ΔΗ°=-206kJ
C) -372 kJ
AG° = ??
AG = 454.4 kJ
AG = -237.2 kJ
C) 197.2 kJ
B)-265.8 kJ
D) 651.6 kJ
D) London
C) Ionic bonding
intermolecular force among a group of molecules of comparable molar mass?
B) Hydrogen bonding
7)
8) Which of the following pure substances exhibits hydrogen
A) HCI
B) H₂S
D) -116 kJ
C) NH3
bonding?
D) CH4
9) A solution was made by dissolving 3.15 g of a solute in
120.3 g of acetone. The solution boiled at
56.58° C. The boiling point of pure acetone is 55.95° C, and the Kb -1.71° C/m. What is the molecular
weight of the solute?
A) 140
B) 105
C) 12.7
D) 71.1
D) 9.34 kg
10) What mass of ethylene glycol (M.W. = 62.1 g/mol) antifreeze must be added to 12.0 liters of water to
C) 0.78 kg
produce a solution that freezes at -23.3 C degrees. Density of water is 1 g/ml and Kr= 1.86° C/m.
B) 3.41 g
A) 6.22 Kg](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbfaea92a-9638-4015-ac2a-6c50f8cc86a5%2F5b06767c-c0d0-4aa0-a958-fb56e2c1094f%2Fx90ly9_processed.jpeg&w=3840&q=75)
Transcribed Image Text:An
(molar mass of H-1, N-14g/mol), (R-0.0821 L.atm/K.mol), (The specific heat of water is 4.184J/g.°C)]
1) The volume of a sample of nitrogen N2 is 7 L at 38°C and 740 torr. What volume will it occupy at STP?
A) 7.78 L
B) 7.18 L
D)5.98 L
C) 6.90 L
2) What is the density of NH3 at 4 atm pressure and a temperature of 30°C?
A) 16.6 g/L
C) 3.36 g/L
B) 1.39 g/L
D) 2.73 g/L
3) How much heat is required to raise the temperature of 1.5 g of water from 25°C to 29°C?
A) 12.55 kJ
B) 6.27 kJ
C) 25.1 kJ
D) 40.5 kJ
4) Estimate the temperature where AG - 0 for the following reaction: (Given: AH = -155 kJ and
AS = -284.5 J/K) CAUTION: Beware of units.NH3(g) + HCl(g)-NH.CI(s)
A) 685 K
B) 545 K
C) 467 K
D) 634 K
5) Calculate AH° for the reaction:
(1) CO+Hz
(2)CO ) +H_O»
(3) CO(g) + 3H2(g) →
A) 33 kJ
6) Calculate AG for the reaction
CO(g)
CO2(g)
CO) + 1/2O2() -
A) 217.2 kJ
Which is the strongest
A) Dipole-dipole
2C+2H2O --->
C) + H₂O
H2(g) + CO2(g)
CH48) + H₂O(g)
B) 53 kJ
C(s) + 1/2O2(g)
C()+ O2(g)
CO2(g)
CH4(g) + CO2(g)
AH-140 kJ
AH 41kJ
ΔΗ°=-206kJ
C) -372 kJ
AG° = ??
AG = 454.4 kJ
AG = -237.2 kJ
C) 197.2 kJ
B)-265.8 kJ
D) 651.6 kJ
D) London
C) Ionic bonding
intermolecular force among a group of molecules of comparable molar mass?
B) Hydrogen bonding
7)
8) Which of the following pure substances exhibits hydrogen
A) HCI
B) H₂S
D) -116 kJ
C) NH3
bonding?
D) CH4
9) A solution was made by dissolving 3.15 g of a solute in
120.3 g of acetone. The solution boiled at
56.58° C. The boiling point of pure acetone is 55.95° C, and the Kb -1.71° C/m. What is the molecular
weight of the solute?
A) 140
B) 105
C) 12.7
D) 71.1
D) 9.34 kg
10) What mass of ethylene glycol (M.W. = 62.1 g/mol) antifreeze must be added to 12.0 liters of water to
C) 0.78 kg
produce a solution that freezes at -23.3 C degrees. Density of water is 1 g/ml and Kr= 1.86° C/m.
B) 3.41 g
A) 6.22 Kg
Expert Solution
Step 1
Given data
T0 = The boiling point of solvent (pure acetone) = 55.95 C
Tb = The boiling point of solution = 56.58 C
mass of the solute = 3.15 g
mass of the solvent (Acetone) = 120.3 g
Kb for solvent = 1.71 C/m
Molecular weight of the solute = g
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