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Duplicate of SCH3U Chapter 6 - The Mole Flashcards | StudBud
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Duplicate of SCH3U Chapter 6 - The Mole
The symbol for Avogadro's number is:
What are the units for molar mass?
Duplicate of SCH3U Chapter 6 - The Mole
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Answers
1
What are the units for
molar mass
?
mol/g
mol
g
g/mol
2
The symbol for
Avogadro's number
is:
AN
K
Av
NA
3
Which of the following is an
empirical formula
?
C40H82
N2O5
C6H10Cl4
S5H10
4
In chemistry, the symbol
M
stands for the quantity:
mass
molar mass
1000
amount
5
How many sulfide ions are in 0.38 mol of Fe
2
S
3
?
6.9 x1024
2.3 x1023
6.9 x1023
4.6 x1023
6
What is the
empirical formula
of a compound with percent composition: 62.6% Sn, 37.4% Cl
SnCl4
SnCl3
SnCl
SnCl2
7
What is the
mass
of 2.70 mol of CBr
4
?
91.9 g
248 g
895 g
123 g
8
What is the
molar mass
for sodium phosphate?
118 g/mol
164 g/mol
54 g/mol
100 g/mol
9
“A specific compound always contains the same elements in the same ratio by________.”
molecules
mass
volume
10
What is a mole?
A number representing mass
A spy
A furry animal
A number representing amount
11
What is the sulfur
percent composition
of SO
2
?
33%
50.%
25%
1%
12
How many molecules of water is 3.5 mol H
2
O?
5.8 x10-24
1.7 x1023
6.3 x1024
2.1 x1024
13
The
molecular formula
for a sulfur-chlorine compound which is 23.2% S and has M = 277.2 g/mol.
S2Cl6
SCl3
SCl2
S2Cl4
