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WorksheetsAvogadro Number
Total questions: 24
Worksheet time: 2hrs 17mins
Name
Class
Date
1.
How many atoms of iodine are in a mole of iodine?
a)
53
b)
63.55g
c)
126.9
d)
6.02 x 1023
2.
The number 6.02 x 1023 is called...
a)
Obama's number
b)
Bohr's number
c)
Trump's number
d)
Avogadro's number
3.
Which has more molecules?
a)
1 mole H2O
b)
1 mole Al(OH)3
c)
1 mole NaCl
d)
There are all the same
4.
How can you figure out how particles (atoms) there are in 2 moles?
a)
2
b)
2 x (6.02 x 1023)
c)
2 x (atomic mass)
d)
2 ÷ (6.02 x 1023)
5.
There are ______ number of molecules (atoms) of NaCl in one mole of NaCl?
a)
6.02 x 1023
b)
1 mole
c)
2
d)
Mr. Miller
6.
How many atoms are in 3.5 moles of arsenic atoms?
a)
5.8 x 10-24
b)
7.5 x 101
c)
2.1 x 1024
d)
1.7 x 1023
7.
How many molecules of sugar (C6H12O6) are in a mole of sugar?
a)
24 molecules
b)
180 molecules
c)
180 g
d)
6.02 x 1023 molecules
8.
How many atoms are in 6.3 mol Zn?
a)
6.0x1023atoms Zn
b)
3.8x1024atoms Zn
c)
1.0x10-23atoms Zn
d)
410atoms Zn
9.
How many Carbon Atoms are in 4.52 moles of Carbon?
a)
6.02 x 1023
b)
1.33 x 1023
c)
4.52
d)
2.72 x 1024
10.
Which conversion factor should be used for the following question " How many molecules are there in 4.00 moles of glucose, C6H12O6?
a)
1 mole = 78.12 g
b)
1 mole = 22.4 L
c)
1 mol = 6.02x 1023 particles
d)
more than one
11.
How many atoms are in 3.4 moles of silver, Ag?
a)
6.02 x1023
b)
2.05 x1024
c)
5.65 x10-24
d)
6.02 x 1024
12.
How many atoms are in 3.4 moles of silver, Ag?
a)
6.02 x1023
b)
2.04 x1024
c)
5.65 x10-24
d)
6.02 x 1024
13.
How many Carbon Atoms are in 4.52 moles of Carbon?
a)
6.02 x 1023
b)
1.33 x 1023
c)
4.52
d)
2.72 x 1024
14.
How many Carbon atoms are in one mole of Carbon?
a)
6.02 x 1023
b)
1
c)
12
d)
not enough information
15.
How many water molecules are in 5.2 moles of water?
a)
6.02 x 1023
b)
5.2
c)
3.1304 x 1024
d)
8.638 x 10-24
16.
How many moles of methane (CH4) are in 1.24 x 1023 molecules of methane?
a)
6.02 x 1023
b)
7.46 x 1046
c)
978
d)
0.206
17.
How many moles of copper contain 1.45x1021 atoms of copper?
a)
8.73x1044
b)
1.20x1024
c)
0.00241
d)
1.45
18.
How many moles of Na contain 1.45x1021 atoms of Na?
a)
8.73x1044
b)
1.20x1024
c)
0.00241
d)
1.45
19.
How many water molecules are in 5.2 moles of water?
a)
6.02 x 1023
b)
5.2
c)
3.1304 x 1024
d)
8.638 x 10-24
20.
How many moles are in 3.01 x 1022 atoms of magnesium?
a)
0.050 moles
b)
1.81 x 1046 moles
c)
5.00 x 1021 moles
d)
5.00 moles
21.
0.75 mole of copper is equal to how many atoms?
a)
8.03 x 10^23
b)
6.02 x 10^23
c)
4.51^x 10^23
d)
3.11 x 10^23
22.
5.11 x 10 23 atoms of lithium is equal to how many moles?
a)
1.18
b)
0.351
c)
1.34
d)
0.849
23.
0.75 mole of copper is equal to how many atoms?
a)
8.03x1023
b)
6.02x1023
c)
4.51x1023
d)
3.11x1023
24.
5.11x1023 atoms of lithium is equal to how many moles?
a)
1.18
b)
0.351
c)
1.34
d)
0.849
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