AP Chemistry Summer Assignment
Mr. Emenhiser
First, I would like to welcome you to the start of your journey with AP Chemistry. Everything
you will need for your summer assignment is in the website link below. There are two parts to
the summer assignment. Both parts are due by August 22nd, 2017 (2nd day of school).
Part I: Notes and Videos:
To get started, click on the following link:
https://apchemistrynmsi.wikispaces.com/AP+Chemistry+Class+Lecture+Notes+AND+instru
ctional+videos
I am assigning the “All Things Stoichiometry” section as Part I of this assignment. This
includes notes and videos from Chapters 1-3. To complete this part of the summer assignment
you need to open the notes (pdf files) for each chapter and follow along the companion videos
(use the password: linuspauling). You will complete all of the examples in the notes and turn in
by July 1st.
Ch.01 Chemical Foundations Notes:
https://apchemistrynmsi.wikispaces.com/file/view/01%20Chemical%20Foundations.pdf/522332
124/01%20Chemical%20Foundations.pdf
Companion Video (Ch. 01):
https://vimeo.com/14216778\
Ch. 02 Atoms, Molecules, and Ions Notes:
https://apchemistrynmsi.wikispaces.com/file/view/02%20Atoms%2C%20Molecules%2C%20Ion
s.pdf/116713743/02%20Atoms%2C%20Molecules%2C%20Ions.pdf
Companion Video (Ch. 02):
http://vimeo.com/14217141
Ch. 03 Stoichiometry: (there are two videos for this chapter)
https://apchemistrynmsi.wikispaces.com/file/view/03%20Stoichiometry%20with%20answers.pd
f/522332384/03%20Stoichiometry%20with%20answers.pdf
Companion Video (Ch. 03 Part I):
https://vimeo.com/13588248
Companion Video (Ch. 03 Part 2):
https://vimeo.com/104121824
Part II: Practice Problems: Complete these problems on a separate sheet of paper with all work
shown for credit. You only need to include the number with your answer, you do not have to
write the questions. There are a total of 28 questions. These problems are to be turned in by
August 22nd.
Ch.01 Chemical Foundations Problems (problem #’s 1-8):
1. Which of the following are exact numbers?
a. The elevation of Breckenridge, Colorado, is 9600 ft.
b. There are 12 eggs in a dozen.
c. One yard is equal to 0.9144 m.
d. The announced attendance at a football game was 52,806.
e. In 1983, 1759 Ph.D.s in chemistry were awarded in the US.
2. How many significant figures are in each of the following?
a. 100
b. 1.0 x 102
c. 1.00 x 103
d. 100.
e. 0.0048
3. Convert the following metric units:
a. How many kilograms are in one teragram?
b. How many nanometers are in 6.50 x 102 terameters?
c. How many kilograms are in 25 femtograms?
d. How many liters are in 8.0 cubic decimeters?
e. How many microliters are in one milliliter?
4. If the temperature in a room is 74oF, what is this temperature on the Celsius scale? on the
Kelvin scale?
5. Helium boils at about 4K. What is this temperature in oF? in oC?
6. A rectangular block has dimensions 2.9cm x 3.5 cm x 10.0 cm. The mass of the block is
615.0g. What are the volume and density of the block?
7. The volume of a diamond is found to be 2.8 mL. What is the mass of the diamond in
carats? 1 carat = 0.200g, density of diamond = 3.51g/cm3
8. Calculate the % error for the following measurements:
a. The density of an aluminum block determined in an experiment was 2.64g/cm3. (True
value 2.70 g/cm3)
Ch.02 Atoms, Molecules, and Ions Problems (9-18):
9. A rxn of 1 L of Cl2 with 3 L of F2 yields 2 L of a gaseous product. All gas volumes are at
the same temp and pressure. What is the formula of the gaseous product?
10. Hydrazine, ammonia, and hydrogen azide all contain only N and H. The mass of H that
combines with 1.00g N for each compound is 1.44 x 10-1g, 2.16 x 10-1g, and 2.40 x 10-2g,
respectively. Show how these data illustrate the law of multiple proportions.
11. Write the atomic symbol for each of the isotopes described below.
a. Z = 8, number of neutrons = 9
b. the isotope of chlorine in which A = 37
c. Z = 27, A = 60
d. # of protons = 26 # of neutrons = 31
e. the isotope of I with a mass number of 131
12. What is the symbol for an ion that has 16 protons, 16 neutrons, and 18 electrons?
13. Complete the table below. Some information is provided, use the information provided to
determine the blank rows.
Symbol
# Protons
# Neutrons
# Electrons
Charge
238
92
U
20
20
35
44
15
16
2+
36
-3
14. What is the trend in metallic character going from left to right across the periodic table?
15. Would you expect the following atoms to gain or lose electrons when forming ions?
What ion is most likely in each case?
a. Ra
b. In
c. P
d. Te
e. Br
f. Rb
16. Name the following compounds:
a. Hg2O
b. FeBr3
c. CoS
d. TiCl4
e. CsF
f. Li3N
g. Ag2S
h. MnO2
i. KOH
j. Sr3P2
17. Write the formula for the following compounds:
a. Sodium nitrate
b. Potassium permanganate
c. Potassium dichromate
d. Sulfur dioxide
e. Iodine trichloride
f. Diphosphorous pentasulfide
g. Dinitrogen tetroxide
h. Cobalt (III) sulfide
i. Sodium hydroxide
j. Lead (II) Phosphate
18. Name the following acids:
a. HCl
b. H2SO4
c. HC2H3O2
d. HNO3
e. HClO3
Ch.03 Stoichiometry Problems (#’s 19-28)
19. The atomic mass of boron is given in the periodic table as 10.81, yet no single atom of
boron has a mass of 10.81 amu. Explain.
20. Assume that element Uus is synthesized and that it has the following stable isotopes:
284
Uus(283.4 amu) 34.60%
285
Uus(284.7 amu) 21.20%
288
Uus(287.8 amu) 44.20%
What is the value of the average atomic mass for Uus would be listed on the periodic
table?
21. How many Fe atoms and how many moles of Fe atoms are in 500.0g of iron?
22. A diamond contains 5.0 x 1021 atoms of carbon. How many moles of carbon and how
many grams of carbon are in this diamond?
23. Calculate the molar mass of the following substances.
a. P4O6
b. Ca3(PO4)2
c. Na2HPO4
24. Humulone, C21H30O5, is one of the flavor components that gives a bitter taste to the hops
used in making beer.
a. What is the molar mass of humulone?
b. How many moles of C21H30O5 molecules are in 275 mg of humulone?
c. What is the mass of 0.600 moles of humulone?
d. How many atoms of hydrogen are in 1.00 pg of humulone?
25. Calculate the % composition by mass of the following compounds that are important
starting materials for synthetic polymers:
a. C3H4O2 (acrylic acid, from which acrylic plastics are made)
26. Fungal laccase, a blue protein found in wood-rotting fungi is 0.390% Cu by mass. If a
fungal laccase molecule contains 4 Cu atoms, what is the molar mass of fungal laccase.
27. The compound adrenaline contains 56.79% C, 6.56% H, 28.37% O, and 8.28% N by
mass. What is the empirical formula for adrenaline?
28. A compound containing only sulfur and nitrogen is 69.6% S by mass; the molar mass is
184g/mol. What are the empirical and molecular formulas of the compound?