WorksheetsIntro to Stoichiometry
Total questions: 62
Worksheet time: 2hrs 25mins
Name
Class
Date
1.
Mole in Chemistry is a(an)_______.
a)
unit
b)
animal
c)
number equals to 6.02
d)
number equals to 12
2.
What is the molar mass of NaOH?
a)
368 g/mole
b)
40 g/mole
c)
57 g/mole
d)
23 g/mole
3.
What is the mass of one mole of AuCl3?
a)
96g
b)
130g
c)
232.5g
d)
303.5g
4.
36.0 g of Be contains how many moles?
a)
0.25 mol
b)
4.0 mol
c)
45 mol
d)
320 mol
5.
4.0 moles of H2O would have what mass?
a)
72 g
b)
23 g
c)
68 g
d)
4.5 g
6.
A mass of 6 g of Carbon contains
a)
1 mole of C
b)
2 moles of C
c)
0.5 moles of C
d)
72 moles of C
7.
How many grams are in 88.1 moles of magnesium?
a)
2141 g
b)
0.3 g
c)
30 g
d)
3.6 g
8.
What is the molar mass of Mn2Se7?
a)
134 g/mole
b)
663 g/mole
c)
189 g/mole
d)
608 g/molw
9.
What is the molar mass of (NH4)2SO4?
a)
66 g/mole
b)
114 g/mole
c)
100 g/mole
d)
132 g/mole
10.
How many grams are in 1.2 x 1024 molecules of CO?
a)
28 grams
b)
56 grams
c)
6.02 grams
d)
1.2 grams
11.
How many moles are in 15 grams of lithium?
a)
0.5 moles
b)
104.1 moles
c)
2.2 moles
d)
50 moles
12.
What are the units for molar mass?
a)
grams
b)
amu
c)
grams/mole
d)
liters
13.
The number 6.02 x 1023 is ______.
a)
molar mass
b)
molecules
c)
Avogadro's number
d)
hydrate
14.
Which of the following has the same number of atoms as in 2 moles Carbon?
a)
All of them
b)
2 moles Mg
c)
2 moles K
d)
2 moles Al
15.
Which one of the following have the greatest mass?
a)
1 mole carbon
b)
2 mole Hydrogen
c)
1 mole silver
d)
1 mole gold
16.
Which of the following has the most number of molecules?
a)
1 mole of calcium
b)
2 mole of sodium
c)
3 mole of helium
d)
4 mole of Lithium
17.
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
18.
A container with a volume of 893 L contains how many moles of air at STP?
a)
20003.2 L
b)
39.9 L
c)
22.4 L
d)
none of the choices
19.
Which of the following dimensional analysis setups will correctly convert 2.50 moles of sodium to grams of sodium?
a)
A
b)
B
c)
C
d)
D
20.
Which represents the greatest mass of sulfur?
a)
1 gram of sulfur
b)
1 molecule of sulfur
c)
0.5 mole of sulfur
d)
6.02 x 1023 atoms of sulfur
21.
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
22.
Which of the following dimensional analysis setups will correctly convert 4.00x1023atoms of cobalt to moles of cobalt? How many moles of colbalt are there?
a)
setup B : 0.6644mol Co
b)
setup A: 2.41x1047mol Co
c)
setup A : 0.664mol Co
d)
setup B: 2.41x1047mol Co
23.
N2 + 3H2 −-> 2NH3
How many moles of ammonium are produced when 3 moles of nitrogen react with hydrogen?
How many moles of ammonium are produced when 3 moles of nitrogen react with hydrogen?
a)
6 moles Ammonium
b)
1.5 moles ammonium
c)
9 moles ammonium
d)
9 moles hydrogen
24.
Consider the balanced equation:
Na2SIO3(s) + 8HF(aq) --> H2SiF6 (aq) + 2NaF(aq) + 3H2O(l)
If 9 moles of water are produced at the end of the reaction, how many moles of hydrofluoric acid were used?
Na2SIO3(s) + 8HF(aq) --> H2SiF6 (aq) + 2NaF(aq) + 3H2O(l)
If 9 moles of water are produced at the end of the reaction, how many moles of hydrofluoric acid were used?
a)
24 moles
b)
3.375 moles
c)
3 moles
d)
.375 moles
25.
Considering the balanced equation:
Na2SIO3(s) + 8HF(aq) --> H2SiF6 (aq) + 2NaF(aq) + 3H2O(l)
If 14.5 moles of sodium silicate were reacted, how many moles of hydrofluoric acid must have reacted?
Na2SIO3(s) + 8HF(aq) --> H2SiF6 (aq) + 2NaF(aq) + 3H2O(l)
If 14.5 moles of sodium silicate were reacted, how many moles of hydrofluoric acid must have reacted?
a)
8 moles
b)
116 moles
c)
0.55 moles
d)
4 moles
26.
Considering the UNBALANCED reaction:
Fe2O3(s) + CO(g) --> Fe(m) + CO2(g)
How many moles of carbon dioxide are produced from 5.5 moles of carbon monoxide?
Fe2O3(s) + CO(g) --> Fe(m) + CO2(g)
How many moles of carbon dioxide are produced from 5.5 moles of carbon monoxide?
a)
5.5 moles
b)
2.75 moles
c)
11 moles
d)
7 moles
27.
Considering the UNBALANCED reaction:
Fe2O3(s) + CO(g) --> Fe(m) + CO2(g)
If 32 moles of iron metal was produced during the reaction, how many moles of carbon monoxide were consumed?
Fe2O3(s) + CO(g) --> Fe(m) + CO2(g)
If 32 moles of iron metal was produced during the reaction, how many moles of carbon monoxide were consumed?
a)
21 moles
b)
21.3 moles
c)
48 moles
d)
64 moles
28.
Solid sodium oxide and water are mixed and aqueous sodium hydroxide is produced.
Write a balanced chemical equation for this reaction.
If 0.678 moles of sodium hydroxide are produced how many moles of sodium oxide was consumed in the reaction?
Write a balanced chemical equation for this reaction.
If 0.678 moles of sodium hydroxide are produced how many moles of sodium oxide was consumed in the reaction?
a)
0.339 moles
b)
1.36 moles
c)
0.678 moles
d)
2.71 moles
29.
The combustion of acetylene gas is represented below.
2C2H2(g) + 5O2(g) --> 4CO2(g) + 2H2O(v)
If 23.24 moles of acetylene were to react, how many moles of oxygen gas would be needed?
2C2H2(g) + 5O2(g) --> 4CO2(g) + 2H2O(v)
If 23.24 moles of acetylene were to react, how many moles of oxygen gas would be needed?
a)
116.2 mol
b)
11.62 mol
c)
9.296 mol
d)
58.1 mol
30.
The combustion of acetylene gas is represented below.
2C2H2(g) + 5O2(g) --> 4CO2(g) + 2H2O(v)
How many moles of carbon dioxide gas were produced from 5 moles of oxygen gas?
2C2H2(g) + 5O2(g) --> 4CO2(g) + 2H2O(v)
How many moles of carbon dioxide gas were produced from 5 moles of oxygen gas?
a)
20 moles
b)
4 moles
c)
0.8 moles
d)
1.25 moles
31.
The combustion of acetylene gas is represented below.
2C2H2(g) + 5O2(g) --> 4CO2(g) + 2H2O(v)
How many moles of water were produced in the reaction from 18 moles of acetylene?
2C2H2(g) + 5O2(g) --> 4CO2(g) + 2H2O(v)
How many moles of water were produced in the reaction from 18 moles of acetylene?
a)
18 mole
b)
9 moles
c)
36 moles
d)
4.5 moles
32.
What is your favorite class?
a)
chemistry
b)
chemistry
33.
a)
Pepsi
b)
Coca-Cola
c)
Pepsi Max
d)
Diet Coke
34.
a)
Safari
b)
Internet Explorer
c)
Mozilla Firefox
d)
Chrome
35.
a)
Adidas
b)
Nike
c)
Superdry
d)
Topshop
36.
a)
Pixar
b)
Lamp
c)
Light
d)
Street light artwork
37.
Name this logo:
a)
Ford
b)
Chevrolet
c)
Volkswagon
d)
Audi
38.
Name this logo:
a)
Volkswagon
b)
Toyota
c)
Hyundai
d)
Audi
39.
Name this logo
a)
BMW
b)
Hyundai
c)
Mazda
d)
Mercedes-Benz
40.
Name this logo:
a)
Corvette Stingray
b)
Dodge Viper
c)
Chevrolet Chevelle
d)
Ford Mustang Shelby
41.
Name this logo:
a)
Mustang Shelby GT
b)
Corvette Stingray
c)
Dodge Viper
d)
Honda Civic
42.
Name this logo:
a)
Porsche
b)
McLaren
c)
Lamborghini
d)
Ferarri
43.
Name this logo:
a)
Bentley
b)
Porsche
c)
Lamborghini
d)
McLaren
44.
Name this logo:
a)
Mercedes-Benz
b)
Jaguar
c)
McLaren
d)
Bugatti
45.
We Deliver
a)
UPS
b)
Mailman
c)
Fed-Ex
d)
DHL
46.
How tall was the tallest man?
a)
7'10"
b)
8'4"
c)
8'11"
d)
9'
47.
How many days are in August?
a)
28
b)
30
c)
31
d)
912
48.
How fast can a cheetah run?
a)
68-75 mph
b)
51-56 mph
c)
56-67 mph
49.
Who invented the telephone?
a)
Bill Gates
b)
John Dunlop
c)
Benjamin Franklin
d)
Alexander Graham Bell
50.
How many countries are in the world?
a)
214
b)
171
c)
176
d)
196
51.
Based on normal life expectancy, how many months does a person spend sleeping during their lifetime?
a)
318
b)
225
c)
407
d)
376
52.
Who wrote the books "Lord of the Rings" and "The Hobbit" which were adapted into movies?
a)
C.S. Lewis
b)
JRR Tolkein
c)
Peter Jackson
d)
Samwise Gamgee
53.
What is the largest state in the United States?
a)
Texas
b)
Washington
c)
California
d)
Montana
54.
What state is this?
a)
Idaho
b)
Wyoming
c)
Minnesota
d)
Montana
55.
In what year was the first Superbowl played?
a)
1958
b)
1962
c)
1951
d)
1967
56.
What country does this flag belong to?
a)
Peru
b)
Brazil
c)
Chile
d)
Suriname
57.
Who's face is on the dime?
a)
Lincoln
b)
Roosevelt
c)
Jefferson
d)
Washington
58.
What movie says "Hakuna Matata"?
a)
Lilo and Stitch
b)
Toy Story
c)
The Jungle Book
d)
The Lion King
59.
A cat has how many muscles in each ear?
a)
12
b)
32
c)
52
d)
2344567890
60.
Which country eats the most chocolate (per person)?
a)
USA
b)
China
c)
Columbia
d)
Switzerland
61.
Who is the author of the famous Harry Potter books?
a)
J.K. Rowling
b)
J.R.R. Tolkien
c)
E.B. White
d)
Roald Dahl
62.
WHAT IS THE LARGEST ORGAN OF THE BODY?
a)
LUNGS
b)
SKIN
c)
HEART
100 %
