Conclusion: When discussing scientific measurement, a few key terms are important
to understand. Precision, meaning that the data collected is close to each other and
accuracy, meaning that the data collected is close to the actual number are a couple of
Purpose: The purpose of this experiment is use and make measurements properly.
Also, to calculate the volume, mass and density of particular objects and liquids.
Sodium Chloride (NaCl)
Solid Rubber Stopper
Purpose: The purpose of this experiment was to convert a hydrated salt (CuSO) to
anhydrous form by way of heat, which produced a liquid (water) separated from the salt.
A test with Cobalt Chloride paper confirmed that the liquid was water. Another purpose
Conclusion: The calorimetry was used to determine the specific heat of aluminum
metal. Two trials were performed using room temperature water and water from an ice
bath. The water absorbed the heat from the aluminum metal. This was calculated first
Purpose: The purpose of this experiment is to look at several different chemical systems at
equilibrium and observe how the system reacts to change in temperature as well as changes in
concentrations of each substance. Also, to observe the principle of Le
Conclusion: In conclusion, Le Chateliers principle was observed in this experiment. The
principle states that when the conditions of a system in equilibrium are changed the system
reacts to counteract the change and reestablish equilibrium. The equilibriu
Purpose: The purpose of this experiment is to find the freezing point of acetic acid,
take data and plot the observed data.
Benzoic acid (CHCOOH)
Acetic acid (HCHO)
Crushed ice (ice water)
400 mL beaker
Conclusion: The freezing point and melting point of any pure substance is equal when the solid and
liquid states are at equilibrium. The liquid state does however, contain more kinetic energy than the
solid state due to the molecules being more spread apa
330 CHAPTER 7 Substitution Reactions
"2? 7 ft:
(2 on For each of the following pairs of compounds, identify
which compound would react more rapidly in an 8N2 reaction.
Explain your choice in each case.
a) A /\/C' b) km /lVB
2 322 In Chapter
390 CHAPTER a
3453? Consider the following reaction:
(a) How would the rate be affected if the concentration of terh
butyl bromide is doubled?
(b) How would the rate be affected if the concentration of
8,33% Consider the following reaction
276 CHAPTER 6 Chemical Reactivity and Mechanisms
11%? For the following mechanism, identify the sequence of arrow~pushing patterns:
=0: 2. 56:9 .e =0: 3. :0:
<1 /I:IO~H e) H e:CI: / HQWH
, , _,- -/ -~>" .,H m~> .
_ i F1 or: R g; 069 R $09 H OH
5 :9: H I
555215 For each pair of compounds belowr predict which
compound will have the highear boiling point and explain your
(a) CH3CH2CH20CH3 or CH3CH2CH2CHQOH
(b) CH3CH2CH2CH3 Oi CH3CH2CH2CH2CH3
i | |
55% Which of t
l86 CHAPTER 4 Aikanes and Cycloaikanes
Sketch an energy diagram showing the conformational
analysis of 2,2,3,3tetramethylbutane. Use Table 4.6 to deter-
mine the energy difference between staggered and eciipsed
conformations of this compound.
at? Rank th
this compound to have a triple
bond? ls it possible for this compound to have a double
(e) Draw all constitutional isorners that hav
e the molecular for-
Qi? Each compound below exhibits one lone pair. ln each
case, identify the type of a
Draw a mirror image for each compound. Label each
compound as chiral or achiral.
Label the chirality center (if one exists) in each cyclic
compound. Some compounds contain no chirality centers.
333 Compound A has a pKa of 7 and compound B has a
-pi<a of 10. Compound A is how many times more acidic than
(a) 3 (b) 3000 (c) 1000
"Wit? in each reaction, identify the Lewis acid and the Lewis
0H + A ts X
/\OH + g :
228 CHAPTER 5 Stereoisomerism
52% For each of the following pairs of compounds, deter~ 37 Identify the number of stereoisomers expected for each
mine the relationship between the two compounds: of the following:
(a) CH cfw_b OH (c) CI
5.5 38 Draw the e
Homework Assigmnent 1 (due W February 1st)
Physics 140: The Greenhouse Effect 5
Spring 2017 '
Reading to e
1. Global Warming (GW) pp. 1 - 18.
2. Beyond Smoke and Mirrors (BSM) pp. 1 16. I
#- Problems / Questions
1 (3 pts. ) The United States (US) consumes
Purpose: The purpose of this experiment is to neutralize a solution using an unknown base.
Potassium hydrogen phthalate
Unknown base solution (NaOH)
Wash bottle for
A carbohydrate can be defined as a molecule
composed of carbon atoms bonded to water molecules.
composed of amine groups and carboxylic acid groups bonded to a carbon skeleton.
composed mostly of hydrocarbons and soluble i
# 2 NAME_
1) A monosaccharide is
an aromatic aldehyde
a compound with one hydroxyl group and two or more carbonyl groups
an aromatic ketone
a compound with one carbonyl group and two or more hydroxyl groups
Classify the molecule shown
TAKE HOME #1 . Total questions 100. Total points 20.
Please choose only one answer. Use Scantron form to fill ONLY ONE rectangle completely
with PENCIL # 2 ONLY. I am not responsible for your mistakes in marking the Scantron
form. (Do NOT make extra marks
TEST # 4 HOME.
1.The primary site within the human body where carbohydrate digestion occurs is the
c. small intestine
d. membranes of intestinal mucosal cells
2. Which of the following conversions is accomplished by the process of gl
Test # 3. NAME
1. Proteins are polymers in which:
a. Unbranched chains of amino acids are present.
b. Branched chains of amino acids are present.
c. Both unbranched and branched chains of amino acids are present.
d. Alternating amino acid and glucose mo
21. Which molecule is chiral?
22. Diastereomers are stereoisomers that are
mirror images of each other.
not mirror images of each other.
nonsuperimposable mirror images of each other.
cistrans isomers of each others.
23. Consider t
Polymers are large molecules with many repetitive units, called monomers, joined together through covalent bonds. The size of a polymer is determined by the number of
monomers being used.
The presence of double bonds in
GOB I and II
Ying Mao, Ph.D.
college approved safety glasses MUST be worn all time during the lab
no food/drink in the lab area
no open toe shoes in lab
report any injure to instructor
GOB I and II
(CHM101 and 102)
Dr. Ying Mao, [email protected], 856-227-7200, ext. 4329
Fall 2015 15-week classes
Four Major Exams
refer to the class schedule for tentative dates
make-up exam (comprehensive) will
Homework Set 13
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) All of the following statements concerning digestion are correct except
A) digestion begins in the stomach and is completed in
Homework Set 12
MULTIPLE CHOICE. Choose the one alternative that best
completes the statement or answers the question.
6) A metabolic pathway that can be illustrated as
A B C D is said to be a(an) _