EBK PHYSICS
5th Edition
ISBN: 8220103026918
Author: Walker
Publisher: PEARSON
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Textbook Question
Chapter 17, Problem 1PCE
(a) Is the number of molecules in one mole of N2 greater than, less than, or equal to the number of molecules in one mole of O2? (b) Is the mass of one mole of N2 greater than, less than, or equal to the mass of one mole of O2?
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(a) matom
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i
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For divers going to great depths, the composition of the air in the tank must be modified. The ideal composition is to have approximately the same number of O2 molecules per unit volume as in surface air (to avoid oxygen poisoning), and to use helium instead of nitrogen for the remainder of the gas (to avoid nitrogen narcosis, which results from nitrogen dissolving in the bloodstream). Of the molecules in dry surface air, 78.0% are N2, 21.0% are O2, and 1.00% are Ar. (Assume that the density of seawater is 1025 kg/m3 and the temperature is 20.0°C.) Density of dry air at 20.0°C is 1.20 kg/m3. Molar mass of N2 is 14.007 g/mol, O2 is 15.999 g/mol, and Ar is 39.948 g/mol.
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Problem II
There is a piece of 10 mm thick a-iron plate. This plate initially
has hydrogen uniformly distributed inside with an initial
concentration Co. Assume that there is no hydrogen in the air. The
plate is left in the air and the hydrogen concentration varies with
the time as follows:
4Co
C(x, t) =
(-9n²Dt\
12
3nx
sin
еxp
where / is the thickness of the plate. If we would like to remove
95% of the hydrogen from the plate, how long will it take when the
plate is at 25 °C?
The pre-exponential and activation energy for hydrogen in a-iron
are 0.1 mm/s and 13,400 J/mol, respectively.
Chapter 17 Solutions
EBK PHYSICS
Ch. 17.1 - Rank the following ideal-gas systems in order of...Ch. 17.2 - If the Kelvin temperature of a gas is doubled, by...Ch. 17.3 - A metal rod of a given initial length and...Ch. 17.4 - A portion of a substances phase diagram is shown...Ch. 17.5 - Which requires more heat: melting 100 kg of copper...Ch. 17.6 - An ice cube is placed in a cup of water. A few...Ch. 17 - How is the air pressure in a tightly sealed house...Ch. 17 - The average speed of air molecules in your room is...Ch. 17 - Is it possible to change both the pressure and the...Ch. 17 - Prob. 4CQ
Ch. 17 - A camping stove just barely boils water on a...Ch. 17 - An autoclave is a device used to sterilize medical...Ch. 17 - As the temperature of ice is increased, it changes...Ch. 17 - BIO Isopropyl alcohol is sometimes rubbed onto a...Ch. 17 - A drop of water on a kitchen counter evaporates in...Ch. 17 - (a) Is the number of molecules in one mole of N2...Ch. 17 - Predict/Explain If you put a helium-filled balloon...Ch. 17 - Two containers hold ideal gases at the same...Ch. 17 - Prob. 4PCECh. 17 - BIO After emptying her lungs, a person inhales 4.3...Ch. 17 - An automobile tire has a volume of 0.0185 m3. At a...Ch. 17 - Prob. 7PCECh. 17 - A compressed-air tank holds 0.500 m3 of air at a...Ch. 17 - Four ideal gases have the following pressures, P,...Ch. 17 - A balloon contains 3.9 liters of nitrogen gas at a...Ch. 17 - Prob. 11PCECh. 17 - Predict/Calculate A bicycle tire with a volume of...Ch. 17 - A 515-cm3 flask contains 0.460 g of a gas at a...Ch. 17 - Prob. 14PCECh. 17 - The air inside a hot-air balloon has an average...Ch. 17 - Prob. 16PCECh. 17 - Consider the system described in the previous...Ch. 17 - Prob. 18PCECh. 17 - Prob. 19PCECh. 17 - If the translational speed of molecules in an...Ch. 17 - At what temperature is the rms speed of H2 equal...Ch. 17 - Suppose a planet has an atmosphere of pure ammonia...Ch. 17 - Prob. 23PCECh. 17 - Prob. 24PCECh. 17 - Prob. 25PCECh. 17 - What is the temperature of a gas of CO2 molecules...Ch. 17 - The rms speed of a sample of gas is increased by...Ch. 17 - Prob. 28PCECh. 17 - A 380-mL spherical flask contains 0.065 mol of an...Ch. 17 - Prob. 30PCECh. 17 - A rock climber hangs freely from a nylon rope that...Ch. 17 - BIO To stretch a relaxed biceps muscle 2.5 cm...Ch. 17 - A 22-kg chimpanzee hangs from the end of a...Ch. 17 - The Marianas Trench The deepest place in all the...Ch. 17 - Four cylindrical rods with various cross-sectional...Ch. 17 - Predict/Calculate A steel wire 4.1 m long...Ch. 17 - BIO Spiderweb An orb weaver spider with a mass of...Ch. 17 - Predict/Calculate Two rods of equal length (0.55...Ch. 17 - A piano wire 0.82 m long and 0.93 mm in diameter...Ch. 17 - The formation of ice from water is accompanied by...Ch. 17 - Vapor Pressure for Water Figure 17-35 shows a...Ch. 17 - Using the vapor-pressure curve given in Figure...Ch. 17 - Prob. 43PCECh. 17 - Prob. 44PCECh. 17 - Predict/Calculate The Vapor Pressure of CO2 A...Ch. 17 - Phase Diagram for Water The phase diagram for...Ch. 17 - Phase Diagram for CO2 The phase diagram for CO2 is...Ch. 17 - Prob. 48PCECh. 17 - How much heat must be removed from 1.96 kg of...Ch. 17 - A heat transfer of 9.5 105 J is required to...Ch. 17 - How much heat must be added to 2.55 kg of copper...Ch. 17 - An ammonia refrigeration cycle involves the...Ch. 17 - Prob. 53PCECh. 17 - Prob. 54PCECh. 17 - Prob. 55PCECh. 17 - Figure 17-30 shows a temperature-versus-heat plot...Ch. 17 - Predict/Calculate Suppose the 1.000 kg of water in...Ch. 17 - Prob. 58PCECh. 17 - When you go out to your car one cold winter...Ch. 17 - A large punch bowl holds 3.99 kg of lemonade...Ch. 17 - A 155-g aluminum cylinder is removed from a liquid...Ch. 17 - An 825-g iron block is heated to 352 C and placed...Ch. 17 - Party Planning You are expecting to serve 32 cups...Ch. 17 - Predict/Calculate A 35-g ice cube at 0.0 C is...Ch. 17 - A 48-g block of copper at 12 C is added to 110 g...Ch. 17 - A 0 075-kg ice cube at 0.0 C is dropped into a...Ch. 17 - To help keep her barn warm on cold days, a farmer...Ch. 17 - CE As you go up in attitude, do you expect the...Ch. 17 - Prob. 69GPCh. 17 - Prob. 70GPCh. 17 - Prob. 71GPCh. 17 - Cooling Computers Researchers are developing heat...Ch. 17 - Prob. 73GPCh. 17 - Prob. 74GPCh. 17 - Evaporating Atmosphere Hydrogen gas evaporates...Ch. 17 - Prob. 76GPCh. 17 - A Boiling Geyser (a) The column of water that...Ch. 17 - A Melting Glacier (a) A glacier is made of ice of...Ch. 17 - Peter catches a 4 2-kg striped bass on a fishing...Ch. 17 - A steel ball (density=7860kg/m3) with a diameter...Ch. 17 - A lead brick with the dimensions shown in Figure...Ch. 17 - (a) Find the amount of heat that must be extracted...Ch. 17 - Mighty Ice Lift A tremendous force is generated...Ch. 17 - Orthopedic Implants Metals such as titanium and...Ch. 17 - Students on a spring break picnic bring a cooler...Ch. 17 - A 5.9-kg block of ice at 1.5 C slides on a...Ch. 17 - A cylindrical copper rod 37 cm long and 7.5 cm in...Ch. 17 - Prob. 88PPCh. 17 - Prob. 89PPCh. 17 - Prob. 90PPCh. 17 - Prob. 91PPCh. 17 - Referring to Example 17-17 (a) Find the final...Ch. 17 - Referring to Example 17-17 (a) Find the final...
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