Chemistry In Context
9th Edition
ISBN: 9781259638145
Author: Fahlman, Bradley D., Purvis-roberts, Kathleen, Kirk, John S., Bentley, Anne K., Daubenmire, Patrick L., ELLIS, Jamie P., Mury, Michael T., American Chemical Society
Publisher: Mcgraw-hill Education,
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Concept explainers
Question
Chapter 10.4, Problem 10.9YT
Interpretation Introduction
Interpretation:
The density of flour form table 10.2 has to be determined; the flour that has the highest density has to be determined.
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Learning Goal:
The conversion factor between mass and number of moles is
called molar mass. By consulting the periodic table, we can
determine that the molar mass of NaCl is
23.0 g/mole + 35.5 g/mole = 58.5 g/mole
This number tells us that 1 mole of NaCl has a mass of 58.5 g
The conversion factors are
58.5 g
1 mole
and
esc
Here is an example of the conversion of 12.0 moles of NaCl to
grams using the first conversion factor:
12.0 moles x
1
Q
1 mole
58.5 g
F1
A
58.5 g
1 mole
2
JE
-702 g
F2
W
S
JUL
27
20
#
3
F3
E
D
DO
$
4
F4
Part A
R
What is the mass of 5.60 moles of magnesium chloride, MgCl₂?
Express your answer with the appropriate units.
▶ View Avallable Hint(s)
mass of MgCl₂
Submit
Part B
F
How many moles of nitrogen, N, are in 71.0 g of nitrous oxide, N₂O?
Express your answer with the appropriate units.
►View Available Hint(s)
Value
%
са
HA
5
F5
T
μA
Value
6
G
Units
MacBook Air
F6
DELET
FORMARE
Y
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7
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H
Units
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F7
U
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8
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FB
O CHEMICAL REACTIONS
Using the Avogadro Number
A penny has a mass of 2.50 g and the Moon has a mass of 7.35 x 10 kg.
22
Use this information to answer the questions below. Be sure your answers have the correct number of significant digits.
What is the mass of 1 mole of pennies?
How many moles of pennies have a mass equal to the mass
of the Moon?
Explanation
Check
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EXERCISE
1-3 Physical Properties and Changes
Identify each physical property and physical change mentioned in each of these
statements. Also identify the qualitative and the quantitative information given in each
statement.
(a) The blue chemical compound azulene melts at 99°C.
(b) The white crystals of table salt are cubic.
(c) A sample of lead has a mass of 0.123 g and melts at 327°C.
(d) Ethanol is a colorless liquid that vaporizes easily; it boils at 78°C and its
density is 0.789 g/mL.
easurements and Calculations: Dimensional Analysis
cermining a property such as density requires scientific measurements a
culations. The result of a measurement, such as 6.544 g or 8.30 mL, usua
Chapter 10 Solutions
Chemistry In Context
Ch. 10.2 - Prob. 10.4YTCh. 10.3 - Prob. 10.5YTCh. 10.4 - You need to make 100 cookies for your school bake...Ch. 10.4 - Prob. 10.7YTCh. 10.4 - Skill Building Apple Pie Creation from Metric...Ch. 10.4 - Prob. 10.9YTCh. 10.5 - Prob. 10.10YTCh. 10.5 - Prob. 10.11YTCh. 10.6 - Scientific Principles The Sustainability of...Ch. 10.6 - Prob. 10.13YT
Ch. 10.7 - Prob. 10.14YTCh. 10.7 - Prob. 10.15YTCh. 10.9 - Prob. 10.18YTCh. 10.9 - Prob. 10.19YTCh. 10.9 - Maybe you have been to a party or outdoor barbeque...Ch. 10.10 - Using Henrys Law, compare the concentration of...Ch. 10 - Prob. 10.1YTCh. 10 - Prob. 10.2YTCh. 10 - Prob. 1QCh. 10 - Prob. 3QCh. 10 - Prob. 5QCh. 10 - Prob. 6QCh. 10 - Prob. 7QCh. 10 - Prob. 8QCh. 10 - Prob. 9QCh. 10 - Prob. 10QCh. 10 - Prob. 12QCh. 10 - Hikers often complain that it is difficult to make...Ch. 10 - Prob. 15QCh. 10 - Prob. 16QCh. 10 - Prob. 18QCh. 10 - Suggest which of the following molecules will...Ch. 10 - What is the name of the substance responsible for...Ch. 10 - Describe why silver cookware tarnishes, especially...Ch. 10 - Prob. 22QCh. 10 - Prob. 23QCh. 10 - Prob. 24QCh. 10 - Prob. 25QCh. 10 - Prob. 26QCh. 10 - One section in this chapter described the Maillard...Ch. 10 - Prob. 28QCh. 10 - In the coffee industry, equipment ranging from...Ch. 10 - Prob. 30QCh. 10 - Prob. 31Q
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