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WorksheetsC3 Mole Q2
Total questions: 10
Worksheet time: 31mins
Name
Class
Date
1.
Vitamin C, also known as ascorbic acid, is water soluble and cannot be produced by the human body. Each day, a person's diet should include a source of Vitamin C, such as orange juice. Ascorbic acid has a molecular formula of C6H8O6 and a molar mass of 176 grams per mole.
Determine the number of moles of vitamin C in an orange that contains 0.171 grams of vitamin C.
a)
30.1 moles
b)
1030 moles
c)
.000971 moles
d)
.0001 mole
2.
Calculate the number of moles of chlorine atoms in 55g of copper (II) chloride.
a)
0.41 moles
b)
0.82 moles
c)
1.6 moles
d)
.20 moles
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.
Which has more molecules?
a)
1 mole H2O
b)
1 mole Al(OH)3
c)
1 mole NaCl
d)
There are all the same
5.
What is the mass of 0.75 moles of (NH4)3PO4?
a)
0.0044 g
b)
91 g
c)
110 g
d)
74 g
6.
Which of the following would have the highest number of moles?
a)
4g CO2
b)
15g H2O
c)
22g NaCl
d)
100g AgCl
7.
How many molecules are present in 135 g of Teflon C2F4
a)
6.13 x 1023 molecules
b)
5.13 x 1023 molecules
c)
8.13 x 10 23 molecules
d)
9.13 x 1023 molecules
8.
How many particles are in 13.5 grams of Beryllium?
a)
1.5 particles
b)
9 particles
c)
4x1023 particles
d)
9x1023 particles
9.
Calculate the number of moles of Aluminum in a 2.04 mole sample of aluminum oxide, Al2O3.
a)
2.04 moles
b)
4.08 moles
c)
6.12 moles
d)
1.02 moles
10.
Determine the number of
atoms in
2.50 moles of zinc.
atoms in
2.50 moles of zinc.
a)
1.51 x 1024 atoms
b)
4.15 x 10-24 atoms
c)
2.71 x 10-22 atoms
d)
163 atoms
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