Chem101 Practice Problems
.docx
keyboard_arrow_up
School
Arizona State University *
*We aren’t endorsed by this school
Course
101
Subject
Chemistry
Date
Jun 9, 2024
Type
docx
Pages
20
Uploaded by GeneralPorcupineMaster370
Chapter 1 - Mostly Units Stuff
Question 1:
Convert 1.21 km to mm.
Question 2:
Convert 2.1 * 10
4
mL to L.
Question 3
Convert 0.55 m
3
to L (1 cm
3
= 1mL, 1 m
3
= (1000 cm)
3
, not 1000 cm
3
)
Question 4
Convert 1.21 kg to g.
Chapter 2 - Atoms, Ions, and the Periodic Table
Question 7
:
What changes between isotopes of an element?
a.
Electrons
b.
Protons
c.
Neutrons
d.
None of the above
Question 8:
What changes between ions of an element?
a.
Electrons
b.
Protons
c.
Neutrons
d.
None of the above
Question 9:
A sample of 0.1 mol of dichloromethane (CH
2
Cl
2
) has a relative abundance of 58% 35
Cl and 42%
37
Cl. What is the average atomic mass of Chlorine in the sample?
Question 10:
In the universe overall, the average atomic mass of Chlorine is 35.446 AMUs. Relatively speaking, which of the following is true of the Chlorine in Question 3 compared to the universe as a whole?
a.
It has more 35
Cl and less 37
Cl
b.
It has more 37
Cl and less 35
Cl
c.
It has more of both 35
Cl and 37
Cl
d.
It has less of both 35
Cl and 37
Cl
e.
None of the above
Chapter 3 - Chemical Compounds
For questions about naming ionic compounds, see the practice worksheet I sent out on Friday.
Question 11:
Name P
4
O
10
.
a.
Phosphoric Oxide
b.
Phosphous Oxide
c.
Tetraphosphorous Decaoxide
d.
None of the above
Question 12:
Name FeO.
a.
Iron Oxide
b.
Iron (II) Oxide
c.
Iron (II) Monoxide
d.
Iron (I) Oxide
Question 13:
Name NI
3
.
a.
Nitrogen Triiodide
b.
Nitrogen Iodide
c.
Nitrogen (III) Iodide
d.
None of the above
Question 14:
Name H
2
O (The chemical name - I know it’s water).
a.
Hydrogen oxide
b.
Dihydrogen oxide
c.
Dihydrogen monoxide
d.
Hydrogen (II) Oxide
e.
None of the above
Question 15:
Name FeP.
a.
Monoiron Monophosphide
b.
Iron (I) Phosphate
c.
Iron (I) Phosphide
d.
Iron (III) Phosphate
e.
Iron (III) Phosphide
f.
None of the above
Question 16: What is the formula of Copper (II) Oxide?
a.
CoO
b.
CoO
2
c.
CuO
d.
CuO
2
e.
Cu
2
O
Question 17:
Name Be
3
N
2
.
a.
Beryllium Nitrate
b.
Beryllium Nitride
c.
Beryllium (III) Nitride
d.
Beryllium (II) Nitrate
e.
None of the above
Question 18:
What is the formula for Copper (I) Sulfate?
a.
CuS
b.
CuSO
4
c.
Cu
2
SO
4
d.
CuS
2
Chapter 4 - Chemical Composition
Question 19:
A mole is most closely analogous to:
a.
A kilogram
b.
A dozen
c.
A liter
d.
A mouse
Question 20:
How many molecules are in 1.4 * 10
-5
mols of CO
2
?
Question 21:
How many mols are in a 345.2 g sample of SiO
2
?
Question 22:
How many mols are in a 71 g sample of FeO?
Question 23:
How many mols of Copper ions are in a 1.34 kg sample of Copper (II) Phosphate?
Question 24:
How many mols ions are in 0.043 kg of sodium chloride?
Chapter 5 - Chemical Reactions and Equations
Question 25:
What kind of reaction is 3H
2 (g) + 2N
2
(g) -> 2NH
3 (l)?
a.
Combination
b.
Decomposition
c.
Single-replacement
d.
Double-replacement
Question 26:
What kind of reaction is BaCl
2
(aq) + Na
2
SO
4
(aq)→BaSO
4
(s) + 2NaCl (aq)?
a.
Combination
b.
Decomposition
c.
Single replacement
d.
Double-replacement
Question 27:
What kind of reaction is 2H
2
O
2
(l) -> O
2
(g)+ 2H
2
O (l)?
a.
Combination
b.
Decomposition
c.
Single replacement
d.
Double-replacement
Question 28:
What kind of reaction is 2AgNO
3
(aq) + Cu (s) -> Cu(NO
3
)
2
(aq) + 2Ag(s)?
a.
Combination
b.
Decomposition
c.
Single replacement
d.
Double-replacement
Question 29:
What kind of reaction is HCl(aq) + Li(s) -> LiCl
2
(aq) + H
2
(g)?
a.
Combination
b.
Decomposition
c.
Single replacement
d.
Double-replacement
Question 30:
a.
Combination
b.
Decomposition
c.
Single replacement
d.
Double-replacement
Question 31:
Which of the following reactions will take place? Assume all reagents are aqueous unless otherwise specified.
a.
Sodium Chloride and Hydrochloric Acid
b.
Potassium Nitrate and Sulfuric Acid
c.
Silver Nitrate and Carbonic Acid
d.
Iron metal and Barium oxide
e.
All of the above
f.
a, b, and c
g.
a and d
h.
a, c, and d
i.
None of the above
Question 32:
Which of the following reactions will form a precipitate?
a.
Reaction of Sodium Hydroxide with Sulfuric Acid
b.
Reaction of Sodium Hydroxide with Iron (II) Sulfate
c.
Reaction of Nitric Acid with Beryllium metal
d.
All of the above
e.
None of the above
Chapter 6 (Part 1) - Quantities in Chemical Reactions
There will be more questions involving quantities in chemical reactions in later sections and in the Putting It All Together section.
Question 33:
Balance the following reaction: H
2
O (l) + AlCl
3
(s)-> Al(OH)
3
(s) + HCl (aq)
Question 34:
Balance the following reaction: AgNO
3
(aq)
+ H
2
SO
4
(aq) -> Ag
2
SO
4
(aq) + HNO
3
Question 35:
In the reaction of Hydrobromic Acid and Iron metal to form Iron (II) Bromide, what is the Mole Ratio between Hydrobromic Acid and Iron (II) Bromide?
Question 36: a.
The reaction of Isopropyl Alcohol (C
3
H
7
OH) and Oxygen gas produces water and CO
2
. Write the balanced equation for the reaction.
b.
I react 22.1 grams of Isopropyl Alcohol (C
3
H
7
OH) with 2.00 mols of Oxygen gas. What is the limiting reagent?
c.
In this reaction, H
2
O is released as a gas. I condensed the H
2
O produced by the reaction into liquid form. How many milliliters of H
2
O should I expect to get? (remember: the density of water is 1 g / mL)
d.
If, after the reaction in Question 36 and the condensation in Question 37, I got XXX mL of H
2
O, what was the percent yield of the reaction?
Question 37:
a.
Ammonia (NH
3
) reacts with Hydrochloric Acid to form Ammonium Chloride (NH
4
Cl). How many grams of Ammonia do I need to fully react with 1.0 mols of Hydrochloric Acid?
b.
How many grams of Ammonium Chloride do I produce?
Question 38:
How many grams of Sodium hydroxide would I need to neutralize (fully react with) 10.0 grams of Phosphoric Acid?
Chapter 6 (Part 2) - Energy and Energy Changes
Question 39:
A reaction that produces heat is:
a.
Exothermic
b.
Endothermic
c.
Homeopathic
d.
Depends on the situation
e.
None of the above
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
Related Questions
Can you do number 7 or 7 and 8
arrow_forward
An analytical chemist measures the amount of Elements E, and E₂ in four samples of an unknown Substance X:
mass
mass
sample of E₁ of E₂
15.8 g 9.1 g
7.6 g 4.4 g
17.2 g 9.8 g
12.1 g 6.9 g
Using this information, answer the questions in the table below.
1
2
3
4
Is X a pure substance or a mixture?
If you don't have enough information to decide, choose can't decide.
It's known that X contains no elements other than E, and E₂.
If you said X is a pure substance, calculate the mass of Element E, the
analytical chemist would find in a new 10.0 g sample of X.
Round your answer to 2 significant digits.
Explanation
Check
O pure substance
O mixture
O (can't decide)
2
0
x10
X
Ⓒ2023 McGraw Hill LLC. All Rights Reserved. Te
arrow_forward
An analytical chemist measures the amount of Elements E₁ and E₂ in four samples of an unknown Substance.
sample of E1
1
2
3
mass mass
of E2
4
16.0 g 9.1 g
17.1 g 9.8 g
18.5 g 10.6 g
12.0 g 6.9 g
It's known that X contains no elements other than E₁ and E₂.
Using this information, answer the questions in the table below.
Is X a pure substance or a mixture?
If you don't have enough information to decide, choose can't decide.
If you said X is a pure substance, calculate the mass of Element E₁ the
analytical chemist would find in a new 10.0 g sample of X.
Round your answer to 2 significant digits.
O pure substance
O mixture
O (can't decide)
g
arrow_forward
4. Calculating Mass of an Element in a Compound. Pitchblende is the most important compound of
uranium. Mass analysis of an 84.2-g sample of pitchblende shows that it contains 71.4 g of uranium,
with oxygen the only other element. How many grams of uranium and of oxygen are in 102 kg of
pitchblende?-
arrow_forward
An oxygen atom has a mass of 2.6610−23g and a glass of water has a mass of 0.050kg.
Use this information to answer the questions below. Be sure your answers have the correct number of significant digits.
What is the mass of 1 mole of oxygen atoms?
How many moles of oxygen atoms have a mass equal to the mass of a glass of water?
arrow_forward
U-238 is naturally the most abundant form of uranium; however, only U-235 can be used as fuel in a nuclear reactor, so uranium for us in the nuclear industry must be enriched in this isotope. If a sample of enriched uranium has 78.72% of U-235 isotope and 21.28% U-238 isotope, what is the average atomic mass of the Uranium sample?
arrow_forward
3. A Chemistry 11 student tries to explain that based on the ratio of the reactants in the reaction below, 1.0 g
of calcium reacts with 1.0 g fluorine gas (F,). Using math and logic, explain to this student why he is wrong.
Ca+ F2e
CAF2(s)
arrow_forward
A nutrition table lists apples with a potassium content of 4600 mg/pound. Assume an
average apple is 75.0 g, the minimum daily intake for potassium for a healthy adult is
3500. mg per day. Calculate the number of apples per day to meet this requirement for a
healthy adult. Assume 454 g = 1 pound.
O 7.96 apples per day
O 0.126 apples per day
O 0.217 apples per day
O 4.61 apples per day
arrow_forward
I’m confused on where to start. Take me step by step.
arrow_forward
An element, Spencerecium, has two isotopes. Spencerecium-145 has a relative abundance of 85 % and Spencerecium-140 has a relative abundance of 15 %. What is the average atomic mass of Spencerecium? Include two decimal places in your answer.
arrow_forward
How many atoms are there in each of the following substances?
I.) 5.14 g P
Express your answer using three significant figures.
II.) 2.36 g Hg
Express your answer using three significant figures.
III.) 1.92 g Bi
Express your answer using three significant figures.
IV.) 8.4×10−2 g Sr
Express your answer using two significant figures.
arrow_forward
A tiny sample of gold contains 1.5 x 10^16 atoms.The mass of the gold sample is ______ μg.
arrow_forward
Determine the number of hydrogen atoms in one liter of water. The density of water is 1 g/ml.
arrow_forward
Element X forms three different compounds with element Y. Information about these compounds is contained in the table.
Mass of Y
per
Compound Formula
gram of X
2.82 g
1
XY6
XY?
1.41 g
3
XY,
0.94 g
What are the formulas of compounds 2 and 3? Replace each question mark with the appropriate integer.
compound 2: ||XY.
compound 3: ||XY2
?3
Incorrect
Incorrect
arrow_forward
Please help complete question 3, 4 and 5
arrow_forward
I need help with this study guide answer in order
arrow_forward
6. Milk of lime is lime in water.
true or false
arrow_forward
Determine the mass of tin that contains 6.89×10^18 tin atom
arrow_forward
Please help with this question in this format
arrow_forward
Write the letter of the correct answer (one letter per number)
arrow_forward
true or false
arrow_forward
Use the data below to determine the mass ratio of iron to oxygen for compound 2.
arrow_forward
Al:CuCl2 ratio
Mass of Al (g)
Calculated mass of CuCl2 (g)
1:1 mass ratio
0.250
2:1 mass ratio
0.250
2:3 mass ratio
0.250
arrow_forward
Differentiate between Molecules and Molecular Compounds?
arrow_forward
Where do I put these?
arrow_forward
A cream contains 4.0% (by mass) lidocaine to relieve back pain. If a patient uses 17
grams of cream, how many milligrams of lidocaine are used?
Your Answer:
Answer
units
18
Group
8A
Group
1A
13
15
Group Group Group Group Group He
SA
14
16
17
1
H Group
2A
ЗА
4A
6A
7A
4.003
10
Ne
1.008
6
8
Li
Be
Transition elements
10.81
13
6.941
9.012
12
12.01
14.01
16.00
19.00
17
CI
20.18
18
Ar
11
14
15
16
Na Mg
3.
4
7
9.
10
11
12
Al
Si
3
3B
4B
5B
6B
7B
-8B
1B
2B
32.07
34
Se
39.95
26.98
31
Ga Ge As
28.09
32
35.45
35
Br
22.99
30.97
24.31
20
Ca
33
21
SC
19
22
23
24
25
26
27
28
29
30
Ti
Cr Mn Fe Co
Ni
Cu Zn
Kr
4
78.96
52
79.90
53
83.80
54
Хе
54.94
39.10
37
58.93
45
63.55
47
65.41
48
69.72
49
72.64
50
74.92
40.08
44.96
47.87
40
50.94
41
Zr Nb Mo
52.00
42
55.85
44
58.69
46
38
Rb
Sr
Tc
Ru
Rh Pd Ag Cd
In
Sn
Sb
Te
131.3
86
Rn
126.9
95.94
74
(99)
75
102.9
77
106.4
78
107.9
79
112.4
80
114.8
81
TI
121.8
83
127.6
84
Po
118.7
82
Pb
207 2
114
FI
85.47
55
87.62
56
Ba
88.91
57
La
91.22
72
Hf
92.91
73
101.1
76
85
6.…
arrow_forward
Determine the number of atoms in 53.0 grams of bromine, Br. (The
mass of one mole of bromine is 79.90 g.)
atoms
1
3
6.
C
7
8.
9.
+/-
х 100
arrow_forward
O STOICHIOMETRY
Using the Avogadro Number
A copper atom has a mass of 1.06 x 10
-22
g and a penny has a mass of 2.5 g.
Use this information to answer the questions below. Be sure your answers have the correct number of significant digits.
What is the mass of 1 mole of copper atoms?
Round your answer to 3 significant digits.
How many moles of copper atoms have a mass equal to the
mass of a penny?
Round your answer to 2 significant digits.
Explanation
Check
arrow_forward
59
Experiment 7 Chemical Properties of Compounds: Chemical Reactions
Date:
Name:
Experiment 7
Chemical Properties of Compounds: Chemical Reactions
Questions and Problems
(May be assigned before or after the experiment, depending on your instructor.)
(Show all calculations where appropriate.)
toom temperature white solid is mixed with a room temperature clear liquid resulting in a clear, colorless
quid that is hot to the touch. Has a chemical reaction occurred? Why or why not? (It may be possible to
argue
in favor of yes OR no. Defend YOUR answer.
Introduction
2. A clear, colorless liquid is mixed with a clear, blue liquid resulting in a white powder suspended in a clear,
colorless liquid. Has a chemical reaction occurred? Why or why not?
arrow_forward
be sure your answer is correct and have the correct number of significant digits
arrow_forward
SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781259911156
Author:Raymond Chang Dr., Jason Overby Professor
Publisher:McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
Organic Chemistry
Chemistry
ISBN:9780078021558
Author:Janice Gorzynski Smith Dr.
Publisher:McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning
Elementary Principles of Chemical Processes, Bind...
Chemistry
ISBN:9781118431221
Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:WILEY
Related Questions
- Can you do number 7 or 7 and 8arrow_forwardAn analytical chemist measures the amount of Elements E, and E₂ in four samples of an unknown Substance X: mass mass sample of E₁ of E₂ 15.8 g 9.1 g 7.6 g 4.4 g 17.2 g 9.8 g 12.1 g 6.9 g Using this information, answer the questions in the table below. 1 2 3 4 Is X a pure substance or a mixture? If you don't have enough information to decide, choose can't decide. It's known that X contains no elements other than E, and E₂. If you said X is a pure substance, calculate the mass of Element E, the analytical chemist would find in a new 10.0 g sample of X. Round your answer to 2 significant digits. Explanation Check O pure substance O mixture O (can't decide) 2 0 x10 X Ⓒ2023 McGraw Hill LLC. All Rights Reserved. Tearrow_forwardAn analytical chemist measures the amount of Elements E₁ and E₂ in four samples of an unknown Substance. sample of E1 1 2 3 mass mass of E2 4 16.0 g 9.1 g 17.1 g 9.8 g 18.5 g 10.6 g 12.0 g 6.9 g It's known that X contains no elements other than E₁ and E₂. Using this information, answer the questions in the table below. Is X a pure substance or a mixture? If you don't have enough information to decide, choose can't decide. If you said X is a pure substance, calculate the mass of Element E₁ the analytical chemist would find in a new 10.0 g sample of X. Round your answer to 2 significant digits. O pure substance O mixture O (can't decide) garrow_forward
- 4. Calculating Mass of an Element in a Compound. Pitchblende is the most important compound of uranium. Mass analysis of an 84.2-g sample of pitchblende shows that it contains 71.4 g of uranium, with oxygen the only other element. How many grams of uranium and of oxygen are in 102 kg of pitchblende?-arrow_forwardAn oxygen atom has a mass of 2.6610−23g and a glass of water has a mass of 0.050kg. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of oxygen atoms? How many moles of oxygen atoms have a mass equal to the mass of a glass of water?arrow_forwardU-238 is naturally the most abundant form of uranium; however, only U-235 can be used as fuel in a nuclear reactor, so uranium for us in the nuclear industry must be enriched in this isotope. If a sample of enriched uranium has 78.72% of U-235 isotope and 21.28% U-238 isotope, what is the average atomic mass of the Uranium sample?arrow_forward
- 3. A Chemistry 11 student tries to explain that based on the ratio of the reactants in the reaction below, 1.0 g of calcium reacts with 1.0 g fluorine gas (F,). Using math and logic, explain to this student why he is wrong. Ca+ F2e CAF2(s)arrow_forwardA nutrition table lists apples with a potassium content of 4600 mg/pound. Assume an average apple is 75.0 g, the minimum daily intake for potassium for a healthy adult is 3500. mg per day. Calculate the number of apples per day to meet this requirement for a healthy adult. Assume 454 g = 1 pound. O 7.96 apples per day O 0.126 apples per day O 0.217 apples per day O 4.61 apples per dayarrow_forwardI’m confused on where to start. Take me step by step.arrow_forward
- An element, Spencerecium, has two isotopes. Spencerecium-145 has a relative abundance of 85 % and Spencerecium-140 has a relative abundance of 15 %. What is the average atomic mass of Spencerecium? Include two decimal places in your answer.arrow_forwardHow many atoms are there in each of the following substances? I.) 5.14 g P Express your answer using three significant figures. II.) 2.36 g Hg Express your answer using three significant figures. III.) 1.92 g Bi Express your answer using three significant figures. IV.) 8.4×10−2 g Sr Express your answer using two significant figures.arrow_forwardA tiny sample of gold contains 1.5 x 10^16 atoms.The mass of the gold sample is ______ μg.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781259911156
Author:Raymond Chang Dr., Jason Overby Professor
Publisher:McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
Organic Chemistry
Chemistry
ISBN:9780078021558
Author:Janice Gorzynski Smith Dr.
Publisher:McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning
Elementary Principles of Chemical Processes, Bind...
Chemistry
ISBN:9781118431221
Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:WILEY