EBK CHEMISTRY FOR CHANGING TIMES
14th Edition
ISBN: 8220100663482
Author: MCCREARY
Publisher: PEARSON
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Question
Chapter 20, Problem 22P
Interpretation Introduction
Interpretation:
The two commonly used compounds in weed killers should be identified and they should be compared in terms of types of plants they killed.
Concept Introduction:
Weed killers are generally known as herbicides, they are chemical substances used to kill weeds which are unwanted plants. They are of two types: selective and non-selective. Selective herbicides kill specific weed species and do not harm others, but non-specific herbicides are total weed killers and kill all plant materials. The selective herbicides only kill specific weed species this may be due to translocation and physical or physiological difference of the plant species.
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Students have asked these similar questions
1. Consider the following molecular-level diagrams of a titration.
O-HA molecule
-Aion
°°
о
°
(a)
о
(b)
(c)
(d)
a. Which diagram best illustrates the microscopic representation for the
EQUIVALENCE POINT in a titration of a weak acid (HA) with sodium.
hydroxide?
(e)
Answers to the remaining 6 questions will be hand-drawn on paper and submitted as a single
file upload below:
Review of this week's reaction:
H₂NCN (cyanamide) + CH3NHCH2COOH (sarcosine) + NaCl, NH4OH, H₂O --->
H₂NC(=NH)N(CH3)CH2COOH (creatine)
Q7. Draw by hand the reaction of creatine synthesis listed above using line structures without showing
the Cs and some of the Hs, but include the lone pairs of electrons wherever they apply. (4 pts)
Q8. Considering the Zwitterion form of an amino acid, draw the Zwitterion form of Creatine. (2 pts)
Q9. Explain with drawing why the C-N bond shown in creatine structure below can or cannot rotate. (3
pts)
NH2(C=NH)-N(CH)CH2COOH
This bond
Q10. Draw two tautomers of creatine using line structures. (Note: this question is valid because problem
Q9 is valid). (4 pts)
Q11. Mechanism. After seeing and understanding the mechanism of creatine synthesis, students should
be ready to understand the first half of one of the Grignard reactions presented in a past…
Propose a synthesis pathway for the
following transformations. b) c) d)
Chapter 20 Solutions
EBK CHEMISTRY FOR CHANGING TIMES
Ch. 20 - Prob. 1RQCh. 20 - Prob. 2RQCh. 20 - Prob. 3RQCh. 20 - Prob. 4RQCh. 20 - Prob. 5RQCh. 20 - What are the primary challenges in feeding an...Ch. 20 - Prob. 7PCh. 20 - Prob. 8PCh. 20 - Prob. 9PCh. 20 - Prob. 10P
Ch. 20 - Prob. 11PCh. 20 - Prob. 12PCh. 20 - Prob. 13PCh. 20 - Prob. 14PCh. 20 - Prob. 15PCh. 20 - Prob. 16PCh. 20 - Prob. 17PCh. 20 - Prob. 18PCh. 20 - Prob. 19PCh. 20 - Prob. 20PCh. 20 - Prob. 21PCh. 20 - Prob. 22PCh. 20 - Prob. 23PCh. 20 - Prob. 24PCh. 20 - Prob. 25PCh. 20 - Prob. 26PCh. 20 - Prob. 27PCh. 20 - Prob. 28PCh. 20 - Prob. 29PCh. 20 - Prob. 30PCh. 20 - Prob. 31PCh. 20 - Prob. 32PCh. 20 - Prob. 33APCh. 20 - Prob. 34APCh. 20 - Prob. 35APCh. 20 - Prob. 36APCh. 20 - Prob. 37APCh. 20 - Prob. 38APCh. 20 - Prob. 39APCh. 20 - Prob. 40APCh. 20 - Prob. 41APCh. 20 - Prob. 42APCh. 20 - Prob. 43APCh. 20 - Prob. 44APCh. 20 - Prob. 45APCh. 20 - Prob. 46APCh. 20 - Prob. 47APCh. 20 - Prob. 48APCh. 20 - Prob. 49APCh. 20 - Prob. 20.1CTECh. 20 - Prob. 20.2CTECh. 20 - Prob. 20.3CTECh. 20 - Prob. 20.4CTECh. 20 - Prob. 20.5CTECh. 20 - A newspaper article suggests, “Try out tobacco...Ch. 20 - Prepare a PowerPoint, poster. or other...Ch. 20 - Prob. 2CGPCh. 20 - Prob. 3CGPCh. 20 - Prob. 4CGPCh. 20 - Prob. 5CGPCh. 20 - Prob. 6CGPCh. 20 - Prob. 7CGPCh. 20 - Prob. 8CGPCh. 20 - Prob. 1CHQCh. 20 - Prob. 2CHQCh. 20 - Prob. 3CHQCh. 20 - Prob. 4CHQCh. 20 - Prob. 5CHQ
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