Melamine is an important industrial chemical, used to make fertilizers and plastics. (a) The carbon-nitrogen bond lengths

Question:

Melamine is an important industrial chemical, used to make fertilizers and plastics. HN :N C. NH C. N Melamine N: C. NH

(a) The carbon-nitrogen bond lengths in the ring are all the same length (about 140 pm). Explain.
(b) Melamine is made by the decomposition of urea, (H₂N)₂CO.

Calculate the enthalpy change for this reaction. Is it endo- or exothermic? [Δ_f H° for melamine(s) =
−66.1 kJ/mol and for urea(s) = −333.1 kJ/mol]

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Chemistry And Chemical Reactivity

ISBN: 9780357001172

10th Edition

Authors: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

See More Books

Question Posted: Oct 30, 2023 03:54 AM

See More Questions

Phosphoric acid (H3PO4) is an important industrial chemical used in fertilizers, in detergents, and in the food industry. It is produced by two different methods. In the electric furnace method,...
Carbon disulfide is a colorless liquid. When pure, it is nearly odorless, but the commercial product smells vile. Carbon disulfide is used in the manufacture of rayon and cellophane. The liquid burns...
Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...
Has Mississippi enacted the Uniform Real Property Electronic Recording Act? Provide the URL/web address of your source. Provide the citation to where this law is found in the Miss. Code (including...
If an application for BRAINIAC COMPUTERS (for computer repair services) is refused registration on the basis that the mark is merely descriptive, how should the applicant respond?
On January 6, 2010, K.P. Scott Co. paid $245,000 for a computer system. In addition to the basic purchase price, the company paid a setup fee of $800, $6,400 sales tax, and $27,800 for a special...
Compile a behaviour observation sheet similar to that in Box 9.6 in respect of either your job or that of a friend. Use this to compile a record of the behaviours observed. LO3
Equipment acquired on January 3, 2005, at a cost of $147,500, has an estimated useful life of eight years and an estimated residual value of $17,500. a. What was the annual amount of depreciation for...
Eagle and Falcon operate a partnership in which they have agreed to share profits and losses in a ratio of 5:3, respectively. They have agreed to accept Robin as a partner, offering her a 20%...
Should the energy required to break one of the HF bonds in HF 2 (HF 2 HF + F ) be greater than, less than, or the same as the energy required to break the bond in HF (HF H + F). Explain your...
A model of the organic compound allene is shown below. (a) Explain why the allene molecule is not flat. That is, explain why the CH 2 groups at opposite ends do not lie in the same plane. (b) What is...
Refer to the Snyder Corporation information in Exercise 13-23. In exercise REQUIRED 1. Where possible, calculate the amount and cost of unused capacity for (a) software implementation support and (b)...
The Joint Commission on Accreditation of Healthcare Organizations (JCAHO) monitors and evaluates health care providers according to strict standards and guidelines. Improvement in the quality of care...
The U.S. National Highway Traffic Safety Administratio (NHTSA) independently tests over 2,400 types of tires annually. In 2015, they issued more than 900 recalls, affecting 51 million vehicles...
The Hudson Jewelers case study can be found in Appendix C. Chapter 17 Case Questions for Discussion: 1.Research and acquire the criteria for diamond appraisals and critique these criteria in terms of...
Gordon Rivers, the city manager of Saratoga, Florida, pitched the proposed design schedule back at Jay Andrews. Jay Andrews is the project manager for Major Design Corporation (MDC). The city of...
Use the data from SE3-8 to prepare the closing entries for The Decade Company. Close the temporary accounts straight to retained earnings. The balance of $\$ 8,500$ in the retained earnings account...
In problems, find Dxy. (a) y = sinh2x (b) y = cosh2x (c) y = 5sinh2x (d) y = cosh3x (e) y = cosh (3x + 1)
A genetically engineered strain of Escherichia coli (E. coli) is used to synthesize human insulin for people suffering from type I diabetes mellitus. In the following simplified reaction scheme,...
The composite beam is constructed from wood and reinforced with a steel strap. Use the method of Sec. 6.6 and calculate the maximum shear stress in the beam when it is subjected to a shear of V = 50...
The beam has a rectangular cross section and is subjected to a load P that is just large enough to develop a fully plastic moment M p = PL at the fixed support. If the material is elastic perfectly...
The beam in Fig. 648f is subjected to a fully plastic moment M p . Prove that the longitudinal and transverse shear stresses in the beam are zero. Hint: Consider an element of the beam shown in Fig....
UNIT 4 POST PROBLEM 2 Following are trial balances of Conglomerate and Sub Company as of December 31, YEAR 2. Sub $ 120,000 40,000 Cash Inventories Investment in S Building Equipment Accounts Payable...
estion 5 t yet answered arked out of 2 Jolly Painters provides painting services to both residential and commercial clients. In addition to paint, other materials for preparation, insurance,...
Required information Skip to question [The following information applies to the questions displayed below.] One Product Corporation (OPC) incorporated at the beginning of last year. The balances on...

Melamine is an important industrial chemical, used to make fertilizers and plastics. (a) The carbon-nitrogen bond lengths

Question:

H₂N :N C. NH₂ C. N Melamine N: C. NH₂

Step by Step Answer:

a The carbonnitrogen bond lengths in the melamine ring are all the same length about 140 pm because ...View the full answer

Chemistry And Chemical Reactivity

Students also viewed these Sciences questions