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FUND.OF GEN CHEM CHAP 1-13 W/ACCESS
16th Edition
ISBN: 9781323406038
Author: McMurry
Publisher: PEARSON C
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Textbook Question
Chapter 6.1, Problem 6.4KCP
What is the molecular weight of cytosine, a component of DNA (deoxyribonucleic acid)? (black = C, blue = N, red = O, white = H.)
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Students have asked these similar questions
1. (10 points) Pulverized coal pellets, which may be
°
approximated as carbon spheres of radius r = 1 mm, are
burned in a pure oxygen atmosphere at 1450 K and 1 atm.
Oxygen is transferred to the particle surface by diffusion, where
it is consumed in the reaction C + O₂ →> CO₂. The reaction rate
is first order and of the form No2 = k₁C₁₂(r), where k₁ = 0.1 m/s.
Neglecting changes in r, determine the steady-state O₂ molar
consumption rate in kmol/s. At 1450 K, the binary diffusion
coefficient for O2 and CO2 is 1.71 x 10ª m²/s.
2. (20 points) Consider combustion of hydrogen gas in a mixture
of hydrogen and oxygen adjacent to the metal wall of a
combustion chamber. Combustion occurs at constant
temperature and pressure according to the chemical reaction
2H₂+ O₂→ 2H₂O. Measurements under steady-state conditions
at 10 mm from the wall indicate that the molar concentrations
of hydrogen, oxygen, and water vapor are 0.10, 0.10, and 0.20
kmol/m³, respectively. The generation rate of water vapor is
0.96x102 kmol/m³s throughout the region of interest. The binary
diffusion coefficient for each of the species (H, O̟, and H₂O) in
the remaining species is 0.6 X 10-5 m²/s.
(a) Determine an expression for and make a qualitative plot
of C as a function of distance from the wall.
H2
(b) Determine the value of C2 at the wall.
H2
(c) On the same coordinates used in part (a), sketch curves
for the concentrations of oxygen and water vapor. This will
require you to calculate Co, and C.
02
H20
(d) What is the molar flux of water…
4. (15 points) Consider a spherical organism of radius ro within
which respiration occurs at a uniform volumetric rate of That is,
oxygen (species A) consumption is governed by a first- order
reaction, homogeneous chemical reaction.
a. If a molar concentration of CA(ro) = CA,o is maintained at
the surface of the organism, obtain an expression for the
radial distribution of oxygen, CA(r), within the organism.
Hint: To simplify solution of the species diffusion equation,
invoke the transformation y = rCA.
b. Obtain an expression for the rate of oxygen consumption
within the organism.
c. Consider an organism of radius ro = 0.10 mm and a
diffusion coefficient of DAB = 108 m2/s. If CA, o = 5 x105
kmol/m3 and k1 20 s1, estimate the corresponding value
of the molar concentration at the center of the organism.
What is the rate of oxygen consumption by the organism?
Chapter 6 Solutions
FUND.OF GEN CHEM CHAP 1-13 W/ACCESS
Ch. 6.1 - Calculate the molecular weight of the following...Ch. 6.1 - How many molecules of ascorbic acid (vitamin C,...Ch. 6.1 - What is the mass in grams of 5.0 1020 molecules...Ch. 6.1 - What is the molecular weight of cytosine, a...Ch. 6.2 - Prob. 6.5PCh. 6.2 - Prob. 6.6PCh. 6.2 - Prob. 6.7PCh. 6.3 - Prob. 6.8PCh. 6.3 - Prob. 6.9PCh. 6.4 - Hydrogen fluoride is one of the few substances...
Ch. 6.4 - The tungsten metal used for filaments in light...Ch. 6.5 - What is the theoretical yield of ethyl chloride in...Ch. 6.5 - The reaction of ethylene oxide with water to give...Ch. 6.5 - Prob. 6.14KCPCh. 6.5 - Dietary iron forms a 1:1 complex with hemoglobin...Ch. 6.5 - Prob. 6.2CIAPCh. 6.5 - Prob. 6.3CIAPCh. 6 - Methionine, an amino acid used by organisms to...Ch. 6 - Prob. 6.16UKCCh. 6 - Prob. 6.17UKCCh. 6 - Prob. 6.18UKCCh. 6 - Prob. 6.19UKCCh. 6 - Prob. 6.20APCh. 6 - What is the difference between molecular weight...Ch. 6 - Prob. 6.22APCh. 6 - Prob. 6.23APCh. 6 - How many calcium atoms are in 16.2 g of calcium?Ch. 6 - What is the mass in grams of 2.68 1022 atoms of...Ch. 6 - Calculate the molar mass of each of the following...Ch. 6 - Prob. 6.27APCh. 6 - Prob. 6.28APCh. 6 - Caffeine has the formula C8H10N4O2. If an average...Ch. 6 - How many moles of aspirin, C9H8O4, are in a 500 mg...Ch. 6 - What is the molar mass of diazepam (Valium),...Ch. 6 - Calculate the molar masses of the following...Ch. 6 - How many moles are present in a 4.50 g sample of...Ch. 6 - How many grams are present in a 0.075 mol sample...Ch. 6 - The principal component of many kidney stones is...Ch. 6 - Prob. 6.36APCh. 6 - Ethyl acetate reacts with H2 in the presence of a...Ch. 6 - Prob. 6.38APCh. 6 - Ammonia, NH3, is prepared for use as a fertilizer...Ch. 6 - Hydrazine, N2H4, a substance used as rocket fuel,...Ch. 6 - Prob. 6.41APCh. 6 - Magnesium metal burns in oxygen to form magnesium...Ch. 6 - Titanium metal is obtained from the mineral...Ch. 6 - Prob. 6.44APCh. 6 - Prob. 6.45APCh. 6 - Prob. 6.47APCh. 6 - Prob. 6.48APCh. 6 - Once made by heating wood in the absence of air,...Ch. 6 - In Problem 6.40, hydrazine reacted with oxygen...Ch. 6 - Dichloromethane, CH2Cl2, the solvent used to...Ch. 6 - Cisplatin [Pt(NH3)2Cl2], a compound used in cancer...Ch. 6 - Prob. 6.53APCh. 6 - Prob. 6.54APCh. 6 - Prob. 6.55CPCh. 6 - Prob. 6.56CPCh. 6 - Prob. 6.57CPCh. 6 - Prob. 6.58CPCh. 6 - Prob. 6.59CPCh. 6 - Prob. 6.60CPCh. 6 - Gaseous ammonia reacts with oxygen in the presence...Ch. 6 - Sodium hypochlorite, the primary component in...Ch. 6 - Barium sulfate is an insoluble ionic compound...Ch. 6 - The last step in the production of nitric acid is...Ch. 6 - Acetylsalicylic acid, the active ingredient in...Ch. 6 - Jewelry and tableware can be silver-plated by...Ch. 6 - Elemental phosphorus exists as molecules of P4. It...Ch. 6 - Lithium oxide is used aboard the International...Ch. 6 - Prob. 6.69CPCh. 6 - Prob. 6.70GPCh. 6 - Obtain a bottle of aspirin and identify the amount...Ch. 6 - Lovastatin, a drug used to lower serum...Ch. 6 - Pyrite, also known as fools gold, is used...
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