Ammonia (NH3) is a covalently bonded molecule, made up of three N-H bonds. For this question,...
Ammonia (NH3) is a covalently bonded molecule, made up of three N-H bonds.
For this question, you should use the following values:
- H-N bond energy = 388 kJ mol-1
- Atomic mass of nitrogen =14.007 g mol-1
- Atomic mass of hydrogen =1.008 g mol-1
(a) Calculate the molecular mass of NH3 . Give your answer in g mol-1 to three significant figures. (2 marks)
(b) Calculate the number of moles in 76 grammes (g) of NH3 . Give your answer to three significant figures. (2 marks)
(c) Hence calculate the energy required to break all of the bonds in 76 g of NH3 .Give your answer in kilojoules (kJ) to three significant figures. (4 marks)
.
Homework Answers
Add Answer to:
Ammonia
(NH3) is a covalently bonded molecule, made up of three
N-H bonds.
For this question,...
Question 19 3 Points Smelling salts work by releasing ammonia to the reaction (NH4)2CO3 (s) -->...
Question 19 3 Points Smelling salts work by releasing ammonia to the reaction (NH4)2CO3 (s) --> 2 NH3 (g) + CO2 (g) + H2O (l) Use Hess' law to calculate the heat of reaction (in kJ) BLANK-1 (Give your answer to 3 significant figures, do not include units in your answer, do not use scientific notation) ΔHof {(NH4)2CO3)} = +156 kJ/mol, ΔH0f {NH3} = -46.1 kJ/mol, ΔH0f {CO2} = -393.5 kJ/mol, ΔH0f {H2O}= -285.8 kJ/mol BLANK-1
Calculate the bond energy per mole for breaking all the bonds in methane, CH4
Part ACalculate the bond energy per mole for breaking all the bonds in methane, CH4.Express your answer to four significant figures and include the appropriate units.ΔHCH4 =1656 kJmolCorrectIn CH4, the energy required to break one C−H bond is 414 kJ/mol. Since there are four C−H bonds in CH4, the energy ΔHCH4 for breaking all the bonds is calculated asΔHCH4=4×bond energy of C−H bond=4×414 kJ/mol=1656 kJ/mol CH4 moleculesPart BCalculate the bond energy per mole for breaking all the bonds of oxygen,...
Question 6 0.5 pts The table below contains the bond dissociation energies for common bonds. 410...
Question 6 0.5 pts The table below contains the bond dissociation energies for common bonds. 410 Dissociation energy Bond (kJ/mol) |C-c 350 CNC 611 C-H 350 (c=0 799 0-0 180 O=O 498 460 C-O H-o Calculate the bond dissociation energy required for breaking all the bonds in a mole of water molecules, H20. Express your answer numerically, in terms of kJ/mol, and to three significant figures.
1 attempts left Check my work Enter your answer in the provided box. Ammonia (NH3) decomposes...
1 attempts left Check my work Enter your answer in the provided box. Ammonia (NH3) decomposes to hydrogen and nitrogen and 22.0 kcal/mol of energy is absorbed. 2 NHj(g) 3 H2(8) + N2(g) AH +22.0 kcal/mol How much energy is absorbed when 2.63 g of NHj reacts? keal of energy absorbed Report your answer to appropriate number of significant figures.
1. The simplest ammonia formation is from nitrogen and hydrogen. Consider the reversible reaction N2(g) + 3H2(g) → 2NH3(g) The standard enthaply and Gibbs free energy of formation one mole NH3 is ∆H◦...
1. The simplest ammonia formation is from nitrogen and hydrogen. Consider the reversible reaction N2(g) + 3H2(g) → 2NH3(g) The standard enthaply and Gibbs free energy of formation one mole NH3 is ∆H◦ m = −46.11 kJ mol−1 and ∆G◦ m = −16.78 kJ mol−1 . (a) What is equilibrium constant at standard condition (25°C and 1 atm)? (b) What is equilibrium constant at 60°C and 1 atm? (c) What is the Gibbs free-energy change relative to that under standard...
Question 8 1 pts The Haber process for the production of ammonia is the main industrial...
Question 8 1 pts The Haber process for the production of ammonia is the main industrial process of producing ammonia today. Prior to developing this process, ammonia was difficult to produce on an industrial scale. The reaction for the Haber process is: N2(g) + 3H2(g) = 2 NH3(g). Using the following values, determine the equilibrium constant for this reaction at 25°C. Substance AGR°(kJ/mol) N H2 NH3 - 16.4 Enter your answer to three significant figures.
1 pts D Question 8 The Haber process for the production of ammonia is the main...
1 pts D Question 8 The Haber process for the production of ammonia is the main industrial process of producing ammonia today. Prior to developing this process, ammonia was difficult to produce on an industrial scale. The reaction for the Haber process is: N2(g)+ 3 H2(8) 2 NH3(g). Using the following values, determine the equilibrium constant for this reaction at 25°C. AG(KJ/mol) Substance N2 H2 NH3 -16.4 Enter your answer to three significant figures.
Zinc forms the cation, Zn2+. A mystery anion X is represented as X2. Given this information,...
Zinc forms the cation, Zn2+. A mystery anion X is represented as X2. Given this information, what is the molecular formula of the salt it forms with zinc? (Chemical formula use subscript numbers, but for this question any required numbers may be formatted normally. Also, do not insert any spaces between the elements.) Answer: Library Home Students According to the VSEPR electron pairs in the valence energy level repel each other and are therefore arranged as far apart as possible....
Problem 5.83 Use bond enthalpies in the table below to estimate ?H for each of the...
Problem 5.83
Use bond enthalpies in the table below to estimate ?H
for each of the following reactions.
Problem 5.83 Part A Use bond enthalpies in the table below to estimate ? 1 for each of the following reactions H-H(g) + Br-Br(g) ? 2H-Br(g) Express your answer in kilojoules to 3 significant figures Average Bond Enthalpies (kJ/mol) 103 kJ C-H 413 N-H 391 O-H 463 F-F 155 C-C 348 N-N 163 O-O 146 C-C 614 N-O 201 O O 495...
2 C 6 H 14 + 19 O 2 → 12 CO 2 + 14 H...
2 C 6 H 14 + 19 O 2 → 12 CO 2 + 14 H 2 O The enthalpy of reaction is −4163.0 kJ/mol. How much energy (in joules) will be released if 94.08 grams of hexane is burned. (Molar mass of hexane = 86.20 g/mol). Record your answer in scientific notation using 3 significant figures.
Question 6 0.5 pts The table below contains the bond dissociation energies for common bonds. 410 Dissociation energy Bond (kJ/mol) |C-c 350 CNC 611 C-H 350 (c=0 799 0-0 180 O=O 498 460 C-O H-o Calculate the bond dissociation energy required for breaking all the bonds in a mole of water molecules, H20. Express your answer numerically, in terms of kJ/mol, and to three significant figures.
1 attempts left Check my work Enter your answer in the provided box. Ammonia (NH3) decomposes to hydrogen and nitrogen and 22.0 kcal/mol of energy is absorbed. 2 NHj(g) 3 H2(8) + N2(g) AH +22.0 kcal/mol How much energy is absorbed when 2.63 g of NHj reacts? keal of energy absorbed Report your answer to appropriate number of significant figures.
Question 8 1 pts The Haber process for the production of ammonia is the main industrial process of producing ammonia today. Prior to developing this process, ammonia was difficult to produce on an industrial scale. The reaction for the Haber process is: N2(g) + 3H2(g) = 2 NH3(g). Using the following values, determine the equilibrium constant for this reaction at 25°C. Substance AGR°(kJ/mol) N H2 NH3 - 16.4 Enter your answer to three significant figures.
1 pts D Question 8 The Haber process for the production of ammonia is the main industrial process of producing ammonia today. Prior to developing this process, ammonia was difficult to produce on an industrial scale. The reaction for the Haber process is: N2(g)+ 3 H2(8) 2 NH3(g). Using the following values, determine the equilibrium constant for this reaction at 25°C. AG(KJ/mol) Substance N2 H2 NH3 -16.4 Enter your answer to three significant figures.
Zinc forms the cation, Zn2+. A mystery anion X is represented as X2. Given this information, what is the molecular formula of the salt it forms with zinc? (Chemical formula use subscript numbers, but for this question any required numbers may be formatted normally. Also, do not insert any spaces between the elements.) Answer: Library Home Students According to the VSEPR electron pairs in the valence energy level repel each other and are therefore arranged as far apart as possible....
Problem 5.83
Use bond enthalpies in the table below to estimate ?H
for each of the following reactions.
Problem 5.83 Part A Use bond enthalpies in the table below to estimate ? 1 for each of the following reactions H-H(g) + Br-Br(g) ? 2H-Br(g) Express your answer in kilojoules to 3 significant figures Average Bond Enthalpies (kJ/mol) 103 kJ C-H 413 N-H 391 O-H 463 F-F 155 C-C 348 N-N 163 O-O 146 C-C 614 N-O 201 O O 495...
Most questions answered within 3 hours.
-
In 500 words or more, explain PCI compliance to the
database administrator at a large retailer....
asked 6 minutes ago -
Find
z0
such that
P(−z0 < z < z0) = 0.6.
(Round your answer to two...
asked 11 minutes ago -
a) The Sarbanes-Oxley Act of 2002 has been most pertinent and
transformative to management decision making...
asked 21 minutes ago -
A driver travels northbound on a highway at a speed of 24.0 m/s.
A police car,...
asked 27 minutes ago -
There are three things that contribute to the significance of
differences. The following is NOT one...
asked 33 minutes ago -
A glowing blackbody is at a temperature of 4.325×103 K. For this
temperature the peak in...
asked 39 minutes ago -
Explain the reasons for enacting the Dodd-Frank Act. What are
some of the implications of this...
asked 31 minutes ago -
What do you regard as the most pressing questions HRM
should tackle? Why do you see...
asked 33 minutes ago -
The Little Coffee Company (LC) is considering entering into the
coffee-brewing business, which is dominated by...
asked 40 minutes ago -
Need help making this Java program:
package assignment1;
public class Fibonacci {
// Exercise 1: Fibonacci...
asked 1 hour ago -
5) Suppose a price floor on sparkling wine is proposed by the
Health Minister of the...
asked 48 minutes ago -
how
are monotremes, cyanodonts , and synapsids related ?
asked 58 minutes ago