Chemistry
4th Edition
ISBN: 9780078021527
Author: Julia Burdge
Publisher: McGraw-Hill Education
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Chapter 1, Problem 13QP
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3. Refer to the data below to answer the following questions:
Isoelectric point
Amino Acid
Arginine
10.76
Glutamic Acid
3.22
Tryptophan
5.89
A. Define isoelectric point.
B. The most basic amino acid is
C. The most acidic amino acid is
sidizo zo
3. A gas mixture contains 50 mol% H2 and 50 mol% He.
1.00-L samples of this gas mixture are mixed with
variable volumes of O2 (at 0 °C and 1 atm). A spark is
introduced to allow the mixture to undergo complete
combustion. The final volume is measured at 0 °C and 1
atm. Which graph best depicts the final volume as a
function of the volume of added O2?
(A)
2.00
1.75
Final Volume, L
1.50
1.25
1.00
0.75
0.50
0.25
0.00
0.00
0.25
0.50
2.00
(B)
1.75
1.50
Final Volume, L
1.25
1.00
0.75
0.50-
0.25
0.00
0.75
1.00
0.00
0.25
Volume O₂ added, L
2
0.50
0.75
1.00
Volume O₂ added, L
2
2.00
2.00
(C)
(D)
1.75
1.75
1.50
1.50
Final Volume, L
1.25
1.00
0.75
0.50
Final Volume, L
1.25
1.00
0.75
0.50
0.25
0.25
0.00
0.00
0.00
0.25
0.50
0.75
1.00
0.00
0.25
Volume O₂ added, L
0.50
0.75
1.00
Volume O₂ added, L
2
Leucine is an essential amino acid with the systematic name 2-amino-3-methylpentanoic acid. It has pai
2.36 and pKa2 = 9.60.
H2N-C(R)H-COOH and R is -CH2-CH(CH3)2
A. Draw the condensed structure for leucine, and label all chirality centers with an asterisk.
B. How many possible stereoisomers of leucine are there?
C. Draw a Fischer projection of L-leucine and label the chirality center(s) as R or S.
D. What is the p/ of leucine?
E. Draw the structure of the predominant form of leucine at 10.00.
F.
Draw the structure of the predominant form of leucine at pH = 1.50.
G. Leucine is described as an essential amino acid. What does this mean?
H. Show the alkyl halide you would use to prepare leucine by the amidomalonate method.
=
Chapter 1 Solutions
Chemistry
Ch. 1.1 - Practice Problem ATTEMPT
Express the freezing...Ch. 1.1 - Practice ProblemBUILD According to the website of...Ch. 1.1 - Prob. 1PPCCh. 1.2 - Prob. 1PPACh. 1.2 - Practice ProblemBUILD In Ray Bradbury's 1953 novel...Ch. 1.2 - Practice ProblemCONCEPTUALIZE If a single degree...Ch. 1.3 - Practice ProblemAttempt Given that 25 .0 mL of...Ch. 1.3 - Practice Problem BUILD
Calculate (a) the density...Ch. 1.3 - Practice ProblemCONCEPTUALIZE Using the picture of...Ch. 1.3 - The coldest temperature ever recorded on Earth was...
Ch. 1.3 - What is the density of an object that has a volume...Ch. 1.3 - A sample of water is heated from room temperature...Ch. 1.3 - Prob. 4CPCh. 1.4 - Prob. 1PPACh. 1.4 - Prob. 1PPBCh. 1.4 - Practice Problem CONCEPTUALIZE
The diagram on the...Ch. 1.4 - Prob. 1CPCh. 1.4 - Prob. 2CPCh. 1.5 - Practice Problem ATTEMPT
Determine the number of...Ch. 1.5 - Practice ProblemBUILD For each of the following...Ch. 1.5 - Prob. 1PPCCh. 1.5 - 1.5.1 What volume of water does the graduated...Ch. 1.5 - Which of the following is the sum of the following...Ch. 1.5 - The true dependence of y on x is represented by...Ch. 1.5 - What is the result of the following calculation to...Ch. 1.6 - Practice ProblemATTEMPT Perform the following...Ch. 1.6 - Practice ProblemBUILD Perform the following...Ch. 1.6 - Practice Problem CONCEPTUALIZE
A citrus dealer in...Ch. 1.6 - The density of lithium metal is 535 kg/m 3 . What...Ch. 1.6 - 1.6.2 Convert to liters.
Ch. 1.6 - 1.6.3 What is the volume of a 5.75-g object that...Ch. 1.6 - How many cubic centimeters are there in a cubic...Ch. 1.7 - Practice Problem ATTEMPT
An empty container with...Ch. 1.7 - Practice Problem BUILD
Another empty container...Ch. 1.7 - Practice ProblemCONCEPTUALIZE Several pieces of...Ch. 1.8 - Practice ProblemATTEMPT The American Heart...Ch. 1.8 - Practice ProblemBUILD An object has a mass of...Ch. 1.8 - Practice ProblemCONCEPTUALIZE The diagram contains...Ch. 1.9 - Practice ProblemATTEMPT The density of silver is...Ch. 1.9 - Practice ProblemBUILD The density of mercury is 13...Ch. 1.9 - Practice ProblemCONCEPTUALIZE Each diagram [ ( i )...Ch. 1 - 1.1
Given that the density of gold is , calculate...Ch. 1 - Prob. 2KSPCh. 1 - Determine the density of the following object in...Ch. 1 - A 28-kg child can consume a maximum of 23...Ch. 1 - Define the terms chemistry and matter.Ch. 1 - 1.2 Explain what is meant by the scientific...Ch. 1 - what is the difference between a hypothesis and a...Ch. 1 - Classify each of the following statements as a...Ch. 1 - Classify each of the following statements as a...Ch. 1 - Identify the elements present in the following...Ch. 1 - Identify the elements present in the following...Ch. 1 - Give an example for each of the following terms:...Ch. 1 - 1.9 Give an example of a homogeneous mixture and...Ch. 1 - Give an example of an element and a compound. How...Ch. 1 - What is the number of known elements?Ch. 1 - Give the names of the elements represented by the...Ch. 1 - 1.13 Give the chemical symbols for the following...Ch. 1 - Classify each of the following substances as an...Ch. 1 - Classify each of the following as an element, a...Ch. 1 - Identify each of the diagrams shown here as a...Ch. 1 - Identify each of the diagrams shown here as an...Ch. 1 - Name the SI base units that are important in...Ch. 1 - 1.19 Write the numbers represented by the...Ch. 1 - 1.20 What units do chemists normally use for the...Ch. 1 - 1.21 What is the difference between mass and...Ch. 1 - 1.22 Describe the three temperature scales used in...Ch. 1 - Bromine is a reddish-brown liquid. Calculate its...Ch. 1 - 1.24 The density of ethanol, a colorless liquid...Ch. 1 - Prob. 25QPCh. 1 - Prob. 26QPCh. 1 - 1.27 The density of water at is . What is the...Ch. 1 - The density of platinum (Pt) is 21 .5 g/cm 3 at...Ch. 1 - Convert the following temperatures to kelvin: (a)...Ch. 1 - Convert the following temperatures to degrees...Ch. 1 - 1.31 Which of the following illustrations best...Ch. 1 - The diagram shows balls of aluminum foil dropped...Ch. 1 - What is the difference between qualitative data...Ch. 1 - Using examples, explain the difference between a...Ch. 1 - How does an intensive property differ from an...Ch. 1 - Determine which of the following properties are...Ch. 1 - Classify the following as qualitative or...Ch. 1 - 1.38 Determine whether the following statements...Ch. 1 - Determine whether each of the following describes...Ch. 1 - 1.40 A student pours 44.3 g of water at into a...Ch. 1 - Prob. 41QPCh. 1 - Comment on whether each of the following...Ch. 1 - What is the advantage of using scientific notation...Ch. 1 - Define significant figure. Discuss the importance...Ch. 1 - Distinguish between the terms accuracy and...Ch. 1 - 1.46 Express the following numbers in scientific...Ch. 1 - Express the following as decimals: (a) 1.52 × 10 −...Ch. 1 - Express the answers to the following calculations...Ch. 1 - 1.49 Express the answers to the following...Ch. 1 - 1.50 Determine the number of significant figures...Ch. 1 - Determine the number of significant figures in...Ch. 1 - Prob. 52QPCh. 1 - Carry out the following operations as if they were...Ch. 1 - Three students ( A, B, and C ) are asked to...Ch. 1 - Three apprentice tailors ( X, Y, and Z ) are...Ch. 1 - Carry out the following conversions: (a) 22.6 m to...Ch. 1 - Carry out the following conversions: (a) 242 lb to...Ch. 1 - The average speed of helium at 25°C is 1255 m/s ....Ch. 1 - Prob. 59QPCh. 1 - Prob. 60QPCh. 1 - Prob. 61QPCh. 1 - 1.62 A 6.0-ft person weighs 168 lb. Express this...Ch. 1 - The highest speed limit in the United States is 85...Ch. 1 - For a fighter jet to take off from the deck of an...Ch. 1 - Prob. 65QPCh. 1 - Prob. 66QPCh. 1 - Carry out the following conversions: (a) 185 nm to...Ch. 1 - 1.68 Aluminum is a lightweight metal used in...Ch. 1 - Prob. 69QPCh. 1 - (a) Carbon monoxide ( CO ) is a poisonous gas...Ch. 1 - Prob. 71QPCh. 1 - A human brain weighs about 1 kg and contains about...Ch. 1 - Using the appropriate number of significant...Ch. 1 - 1.74 A piece of metal with a mass of 13.2 g was...Ch. 1 - 1.75 Which of the following statements describe...Ch. 1 - 1.76 In determining the density of a rectangular...Ch. 1 - Calculate the mass of each of the following: (a) a...Ch. 1 - 1.78 A cylindrical glass tube 12.7 cm in length is...Ch. 1 - The following procedure was used to determine the...Ch. 1 - 1.80 The speed of sound in air at room temperature...Ch. 1 - A piece of silver ( Ag ) metal weighing 194.3 g is...Ch. 1 - The experiment described in Problem 1.81 is a...Ch. 1 - A lead sphere has a mass of 1 .20 × 10 4 g . and...Ch. 1 - Lithium is the least dense metal known ( density =...Ch. 1 - At what temperature does the numerical reading on...Ch. 1 - Prob. 86APCh. 1 - Prob. 87APCh. 1 - A sheet of aluminum ( A1 ) foil hat a total area...Ch. 1 - Prob. 89APCh. 1 - 1.90 The surface area and average depth of the...Ch. 1 - The unit "troy ounce" is often used for precious...Ch. 1 - Prob. 92APCh. 1 - Calculate the percent error for the following...Ch. 1 - In water conservation, chemists spread a thin film...Ch. 1 - 1.95 You are given a liquid. Briefly describe the...Ch. 1 - A gas company in Massachusetts charges $1 .30 for...Ch. 1 - Prob. 97APCh. 1 - 1.98 A bank teller is asked to assemble sets of...Ch. 1 - The men's world record for running a mile outdoors...Ch. 1 - 1.100 Venus, the second closest planet to the sun....Ch. 1 - Comment on whether each of the following is a...Ch. 1 - It has been estimated that 8.0 × 10 4 tons of gold...Ch. 1 - Prob. 103APCh. 1 - 1.104 Measurements show that 1.0 g of iron ...Ch. 1 - 1.105 The thin outer layer of Earth, called the...Ch. 1 - 1.106 The radius of a copper atom is roughly ....Ch. 1 - A graduated cylinder is filled to the 40.00-mL...Ch. 1 - A chemist mixes two liquids A and B to form a...Ch. 1 - A chemist in the nineteenth century prepared an...Ch. 1 - Chlorine is used to disinfect swimming pools. The...Ch. 1 - Prob. 111APCh. 1 - Prob. 112APCh. 1 - Chalcopyrite, the principal one of copper ( Cu ) ,...Ch. 1 - 1.114 Vanillin (used to flavor vanilla ice cream...Ch. 1 - One gallon of gasoline in an automobile’s engine...Ch. 1 - 1.116 Magnesium (Mg) is a valuable metal used in...Ch. 1 - Prob. 117APCh. 1 - The natural abundances of elements in the human...Ch. 1 - A resting adult requires about 240 mL of pure...Ch. 1 - 1.120 (a) Referring to Problem 1.119. calculate...Ch. 1 - The medicinal thermometer commonly used in homes...Ch. 1 - TUMS is a popular remedy for acid indigestion. A...Ch. 1 - Prob. 123APCh. 1 - English writer and essayist Lady Mary Wortley...Ch. 1 - English writer and essayist Lady Mary Wortley...Ch. 1 - English writer and essayist Lady Mary Wortley...Ch. 1 - English writer and essayist Lady Mary Wortley...
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