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WorksheetsMole & Particle Conversions
Total questions: 20
Worksheet time: 42mins
Name
Class
Date
1.
In chemistry, a "mole" is:
a)
The mass of an atom
b)
a large number used to count particles
c)
based on the volume of a substance
2.
How many atoms of iodine are in a mole of iodine?
a)
53
b)
63.55g
c)
126.9
d)
6.02 x 1023
3.
The number 6.02 x 1023 is called...
a)
Obama's number
b)
Bohr's number
c)
Trump's number
d)
Avogadro's number
4.
How many particles would be in 8.4 moles of Octane (C8H18)?
a)
5.77 x 1023
b)
5.04 x 1024
c)
5.77 x 1026
d)
5.04 x 1023
5.
Which has more molecules?
a)
1 mole H2O
b)
1 mole Al(OH)3
c)
1 mole NaCl
d)
There are all the same
6.
What is the mole used for?
a)
To measure the amount of grams in a substance
b)
To measure the amount of atoms or molecules in a substance
c)
To measure the amount of energy in a substance
d)
To measure the amount of bonding in a substance
7.
How many molecules are there in 5.5 moles potassium chloride?
a)
4.08 x 10-24
b)
3.31 x 1024
c)
33.11
d)
0.98
8.
How many students are there in 31.8 moles of students?
a)
5.28 x 10-23 students
b)
1.91 x 1025 students
c)
5.28x 10-25 students
d)
1.91 x 1022 students
9.
How many moles are 2.85 x 1020 atoms of iron?
a)
4.73 x 10-4 moles
b)
1.72 x 104 moles
c)
1.72 x 10-42 moles
d)
4.73 x 104 moles
10.
How many moles of copper are 4.57 x 1015 atoms of copper?
a)
7.59 x 10-9 moles
b)
2.75 x 10-33 moles
c)
7.59 x 109 moles
d)
2.75 x 1033 moles
11.
A mole of carbon disulfide contains 6.02 x 1023 _____.
a)
atoms
b)
formula units
c)
ions
d)
molecules
12.
Determine the amount of moles in 4.50 x 1023 atoms of fluorine.
a)
9.03 x 1046 moles
b)
0.757 moles
c)
4.73 moles
d)
0.0131 moles
13.
Determine the number of atoms in 0.50 moles of zinc.
a)
0.30 x 1024 atoms
b)
4.15 x 10-24 atoms
c)
2.71 x 10-22 atoms
d)
303 atoms
14.
Five moles of Cl2 has the same particles in five moles of O2
a)
True
b)
False
15.
Convert 1.5 moles of beryllium oxide to molecules
a)
25.01 molecules
b)
9.0 x 1023 molecules
c)
0.12 molecules
d)
1.80 x 1024 molecules
16.
Which list of number of atoms in Mg(NO2)2 is right?
a)
Mg : 1--NO : 2
b)
Mg : 1-- N : 6--O: 2
c)
Mg : 1-- N: 1-- O: 2
d)
Mg : 1-- N: 2-- O: 4
17.
Which list of number of atoms in K3PO3 is right?
a)
K : 3--PO : 3
b)
K :3--P : 1--O: 3
c)
K : 3-- P: 4--O: 1
d)
K : 3-- P: 5--O: 4
18.
How many molecules are in 9.4 moles of AlCl3?
a)
5.66
b)
5.66x1024
c)
0.705
d)
1.25x1023
19.
How many moles are in 6 x 1023 molecules of H2O?
a)
1
b)
2
c)
6
d)
600
20.
How many molecules are in 2.5 mol of NaCl?
a)
1.51x1023
b)
146
c)
4.15
d)
1.51x1024
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