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WorksheetsMole - Mass Conversions
Total questions: 21
Worksheet time: 2hrs 32mins
Name
Class
Date
1.
How many molecules are in 2.5 mol of NaCl?
a)
1.51x1024
b)
146
c)
4.15
d)
1.5x1024
2.
How many grams are in 3.3 mol of Potassium Sulfide?
a)
360 g
b)
450 g
c)
363 g
d)
454 g
3.
How many molecules of sugar (C6H12O6) are in one mole?
a)
24 molecules
b)
180 molecules
c)
180 g
d)
6.02 x 1023 molecules
4.
How many particles are in 13.5 grams of Beryllium?
a)
1.5 particles
b)
9 particles
c)
4.01x1023 particles
d)
9.03x1023 particles
5.
Calculate the number of atoms in 0.0340 g Zn.
a)
5.200 x 10-4 atoms Zn
b)
3.130 x 1023 atoms Zn
c)
3.130 x 1020 atoms Zn
d)
1 atom Zn
6.
What type of particle is: Ag
a)
Atom
b)
Molecule
c)
Formula Unit
d)
Ion
7.
What type of particle is: NO2
a)
Atom
b)
Molecule
c)
Formula Unit
d)
Ion
8.
What type of particle is: Br2
a)
Atom
b)
Molecule
c)
Formula Unit
d)
Ion
9.
What is the mass of 1.2 x 1024 atoms of C?
a)
23.9 grams
b)
24 grams
c)
6.02 grams
d)
1.2 grams
10.
What is the mass of 3.01 x 1022 atoms of magnesium?
a)
1.22 grams
b)
1.3 grams
c)
1.2 grams
d)
1.22x1046 grams
11.
How many moles of copper (II) chlorate contain 1.45x1021 formula units?
a)
8.73x1044
b)
1.20x1024
c)
0.00241
d)
1.45
12.
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
13.
What is the molar mass of Hydrogen Peroxide (H2O2)?
a)
48 g/mole
b)
34.02 g/mole
c)
36.5 g/mole
d)
35.5 g/mole
14.
The number 6.02 x 1023, which is the number of particles found in a mole.
a)
molar mass
b)
mole
c)
Avogadro's number
d)
hydrate
15.
How many moles are in 16.94g of water?
a)
16.94 mol H2O
b)
0.9401 mol H2O
c)
305.3 mol H2O
d)
1.063 mol H2O
16.
How many molecules are in 9.44 moles of AlCl3?
a)
5.68 molec AlCl3
b)
5.68x1024 molec AlCl3
c)
0.705 molec AlCl3
d)
1.25x1023 molec AlCl3
17.
Find the number of moles in 32 grams of oxygen.
a)
1 mole
b)
16 moles
c)
32 moles
d)
24 moles
18.
What is the mass of 1.0 x 1012 molecules of O2?
a)
1.9 x 1013 g
b)
6.0 x 1011 g
c)
5.3 x 10-11 g
d)
1.7 x 10-12 g
19.
How many atoms are in a 3.56 g sample of Cu?
a)
3.37 x 1022 Cu atoms
b)
6.02 x 1023 Cu atoms
c)
0.056 Cu atoms
d)
1 Cu atom
20.
How many g of CaCO3 are present in a sample if there are 4.52 x 1024 atoms of carbon in that sample?
a)
100 g CaCO3
b)
7.51 g CaCO3
c)
90.2 g CaCO3
d)
751 g CaCO3
21.
How many moles of oxygen atoms are contained in 2.50 mol of KMnO4?
a)
10.0 mol O atoms
b)
2.50 mol O atoms
c)
1.50 x 1024 mol O atoms
d)
0.625 mol O atoms
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