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Q 3 please

Q 3 please

Chemistry
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 3 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
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
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