Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Chapter 9, Problem 88CWP
Pelargondin is the molecule responsible for the red color of the geranium flower. It also contributes to the color of ripe strawberries and raspberries. The structure of pelargondin is:
How many σ and π bonds exist in pelargondin? What is the hybridization of the carbon atoms marked 1–4?
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Nido-boranes are structures with the molecular formula BnHn+4 that exhibit B-B, B-H-B and B-H bonds. Correct?
8:07 AM Wed Dec 18
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A
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125 mM that yielded peak heights of Aa =
9 1-(a)A sample solution was examined under XRF to quantify the analyte Ce³+. Find the response factor F, when standardized concentration of analyte [Ce³+]A =
concentration of internal standard S i.e. [In³*]s =
151
mM was spiked with standardized
1600 and As = 3015
respectively?
11
12
(i)Define F,
F =
Aa
As
[A]
[S]
+
X
13
(*Define with variables)
4000
14
15
(ii)Calculate F,
F =
numeral
(You will use the F value in part 1-(b) below)
As
16
(*Calculate with numerals)
17
18
1-(b)To determine the unknown conc of analyte [Ce³+], a volume of 15 mL of internal standard S having a concentration [In³+]s =
0.264
M
19
20
was added to 45 mL of unknown, and the mixture was diluted to 100 mL in a volumetric flask. XRF analysis yielded a spectrum, Figure-1, where peak
heights A and As are…
All structural types of Boron hydrides exhibit B-B, B-H-B and B-H bonds. Correct?
Chapter 9 Solutions
Chemistry
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