Chemistry In Focus
7th Edition
ISBN: 9781337399692
Author: Tro, Nivaldo J.
Publisher: Cengage Learning,
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Question
Chapter 15, Problem 35E
Interpretation Introduction
Interpretation:
A perfume in three different notes is to be described along with the kinds of molecules in the notes.
Concept Introduction:
A perfume is a fragrant liquid solution made up of essential oil which is extracted from natural sources, and is used to give a pleasant odor to the body. Perfumes are composed of natural sources as well as synthetic sources, which are manufactured in the laboratoty.
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Choose the correct term from the enclosed choices that
should go into the blank spaces.
Cosmetics are composed of different ingredients that
marketable quality.
ensure
function and maintain
(1).
ingredients are the chemicals that perform the main
(Functional/Supportive)
function of the cosmetic product.
Those chemicals that improve the shelf life of the
product
(supportive/structural)
(functional/added extra) are chemicals in small amounts
are
called
(2)
ingredients.
(3).
that make the product more presentable and marketable
to the consumers.
Antioxidants
and
(4)
(abrasives/preservatives) lengthen the shelf life of a
product. (5)
(Astringent/Exfoliant)
can be found in whitening products because it can remove
dead skin cell layers. The cosmetic ingredient that can
prevent the separation of oil and water in the emulsion is
called
(6)
agent/emulsion stabilizer). (7)_
(emulsifying
(Chelating
agent/Opacifying
agent)
prevents
the
deterioration of the foam and binds ions in the hard water.…
Sulfur compounds cause "off odors" in wine, so winemakers want to know the odor threshold — the lowest concentration of a compound that the human nose can detect. The odor threshold for dimethyl sulfide (DMS) in trained wine tasters is about 2525 micrograms per liter of wine (?g/L).(�g/L). The untrained noses of consumers may be less sensitive, however. The DMS odor thresholds for 1010 untrained students are given.
DMS odor thresholds
30
30
42
35
22
33
31
29
19
23
Assume that the standard deviation of the odor threshold for untrained noses is known to be ?=7 ?g/L.
Give a 95% confidence interval for the mean DMS odor threshold among all students. Use the four‑step process. Give your answer as an interval in the form (lower bound, upper bound). Give your numbers to two decimal places.
What is the confidence interval ?
4) The following figure is a type of molecule found in nature. What type of molecule is it? Please
label the parts and then answer the following questions about the molecule.
Name/Part:
H,C-O
HC
12
15
H,C–O
a
1
Methylene
Name/Part:
a) What is the name of the entire molecule that is seen above?
Triglyceride molecule
b) What specific type of this molecule is seen above? (What is the number one referring to?)
glycerol and three fatty acids (The number 1 referring to the position of double bond between
carbon k and k+1 counted from 1 at the end.
d) What class or group of biological macromolecules does the above figure belong to?
It belongs to the lipids (fat or oil)
Chapter 15 Solutions
Chemistry In Focus
Ch. 15 - Prob. 15.1YTCh. 15 - Prob. 1SCCh. 15 - Prob. 2SCCh. 15 - Prob. 3SCCh. 15 - Prob. 1ECh. 15 - Prob. 2ECh. 15 - Prob. 3ECh. 15 - Prob. 4ECh. 15 - Prob. 5ECh. 15 - Prob. 6E
Ch. 15 - Prob. 7ECh. 15 - Prob. 8ECh. 15 - Prob. 9ECh. 15 - Prob. 10ECh. 15 - Prob. 11ECh. 15 - Prob. 12ECh. 15 - Prob. 13ECh. 15 - Define eutrophication.Ch. 15 - Prob. 15ECh. 15 - Prob. 16ECh. 15 - Prob. 17ECh. 15 - Prob. 18ECh. 15 - Prob. 19ECh. 15 - What are the three types of interactions that...Ch. 15 - Prob. 21ECh. 15 - Prob. 22ECh. 15 - Prob. 23ECh. 15 - Prob. 24ECh. 15 - Prob. 25ECh. 15 - Prob. 26ECh. 15 - Prob. 27ECh. 15 - Prob. 28ECh. 15 - Prob. 29ECh. 15 - How do sunscreens protect your skin from the Suns...Ch. 15 - Prob. 31ECh. 15 - Prob. 32ECh. 15 - Prob. 33ECh. 15 - Prob. 34ECh. 15 - Prob. 35ECh. 15 - Prob. 36ECh. 15 - Prob. 37ECh. 15 - Prob. 38ECh. 15 - Prob. 39ECh. 15 - Prob. 40ECh. 15 - Prob. 41ECh. 15 - Prob. 42ECh. 15 - Prob. 43ECh. 15 - Prob. 44ECh. 15 - Prob. 45ECh. 15 - Prob. 46ECh. 15 - The salt bridges that hold hair protein (keratin)...Ch. 15 - Prob. 48ECh. 15 - The hydrochloric acid present in toilet bowl...Ch. 15 - Prob. 50ECh. 15 - Prob. 51ECh. 15 - Prob. 52ECh. 15 - Prob. 53ECh. 15 - Prob. 54ECh. 15 - Prob. 55ECh. 15 - Prob. 56ECh. 15 - Prob. 57ECh. 15 - Prob. 58ECh. 15 - Prob. 59ECh. 15 - Prob. 60ECh. 15 - Prob. 61ECh. 15 - Prob. 62ECh. 15 - Prob. 64ECh. 15 - Prob. 65E
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