Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
![b
Learning Goal:
To learn how to convert grams to moles and to use the mole to
find the number of atoms in a sample.
The mole (abbreviated mol) is a counting unit used to simplify
calculations that would otherwise involve very large numbers. The
mole is equivalent to the number of carbon atoms in exactly 12 g
of isotopically pure 12C, or 6.02 x 1023. This number is known
as Avogadro's number in honor of Amedeo Avogadro.
"ock
Avogadro's number can be used as a conversion factor between
moles and atoms as shown here:
The molar mass of a substance is the mass of one mole of a
substance and is written in units of grams per mole. The molar
mass of an atom is equivalent to its atomic mass whereas the
molar mass of a substance is equivalent to its formula weight.
esc
!
6.02x10 atoms
1 mole of atoms
1
Q
A
N
@
2
W
S
3
X
2
Control option command
H
80
E
D
$
4
C
Part A
How many moles of atoms are in 5.00 g of 13 C?
Express your answer numerically in moles.
▸ View Available Hint(s)
a
Part B Complete previous part(s)
Part C Complete previous part(s)
Part D Complete previous part(s)
R
195] ΑΣΦ
Submit
Provide Feedback
F
5
"
T
V
A
6
G
MacBook Air
→
%
Y
B
&
7
H
?
U
mol 13C
*
N
00
8
J
D-II
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Transcribed Image Text:b
Learning Goal:
To learn how to convert grams to moles and to use the mole to
find the number of atoms in a sample.
The mole (abbreviated mol) is a counting unit used to simplify
calculations that would otherwise involve very large numbers. The
mole is equivalent to the number of carbon atoms in exactly 12 g
of isotopically pure 12C, or 6.02 x 1023. This number is known
as Avogadro's number in honor of Amedeo Avogadro.
"ock
Avogadro's number can be used as a conversion factor between
moles and atoms as shown here:
The molar mass of a substance is the mass of one mole of a
substance and is written in units of grams per mole. The molar
mass of an atom is equivalent to its atomic mass whereas the
molar mass of a substance is equivalent to its formula weight.
esc
!
6.02x10 atoms
1 mole of atoms
1
Q
A
N
@
2
W
S
3
X
2
Control option command
H
80
E
D
$
4
C
Part A
How many moles of atoms are in 5.00 g of 13 C?
Express your answer numerically in moles.
▸ View Available Hint(s)
a
Part B Complete previous part(s)
Part C Complete previous part(s)
Part D Complete previous part(s)
R
195] ΑΣΦ
Submit
Provide Feedback
F
5
"
T
V
A
6
G
MacBook Air
→
%
Y
B
&
7
H
?
U
mol 13C
*
N
00
8
J
D-II
N
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