Physics for Scientists & Engineers, Volume 2 (Chapters 21-35)
5th Edition
ISBN: 9780134378046
Author: GIANCOLI, Douglas
Publisher: PEARSON
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(a) Compute the rms speed of a nitrogen molecule at 20.0C.The molar mass of nitrogen molecules (N2) is given in Table 19-1.At what temperatures will the rms speed be (b) half that value and(c) twice that value?
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What is the average translational kinetic energy of an ideal-gas molecule at 27C? (b) What is the total random translational kinetic energy of the molecules in 1 mole of this gas? (c) What is the rms speed of oxygen molecules at this temperature?
Chapter 18 Solutions
Physics for Scientists & Engineers, Volume 2 (Chapters 21-35)
Ch. 18.1 - Prob. 1AECh. 18.1 - Prob. 1BECh. 18.1 - Prob. 1CECh. 18.1 - Prob. 1DECh. 18.4 - Prob. 1EECh. 18 - Why doesnt the size of different molecules enter...Ch. 18 - When a gas is rapidly compressed (say, by pushing...Ch. 18 - In Section 181 we assumed the gas molecules made...Ch. 18 - Explain in words how Charless law follows from...Ch. 18 - Prob. 5Q
Ch. 18 - As you go higher in the Earths atmosphere, the...Ch. 18 - Prob. 7QCh. 18 - Explain why the peak of the curve for 310 K in...Ch. 18 - Is temperature a macroscopic or microscopic...Ch. 18 - Escape velocity for the Earth refers to the...Ch. 18 - Prob. 11QCh. 18 - If the pressure in a gas is doubled while its...Ch. 18 - What everyday observation would tell you that not...Ch. 18 - Alcohol evaporates more quickly than water at room...Ch. 18 - Explain why a hot humid day is far more...Ch. 18 - Is it possible to boil water at room temperature...Ch. 18 - What exactly does it mean when we say that oxygen...Ch. 18 - A length of thin wire is placed over a block of...Ch. 18 - Consider two days when the air temperature is the...Ch. 18 - (a) Why does food cook faster in a pressure...Ch. 18 - How do a gas and a vapor differ?Ch. 18 - (a) At suitable temperatures and pressures, can...Ch. 18 - Why does dry ice not last long at room...Ch. 18 - Under what conditions can liquid CO2 exist? Be...Ch. 18 - Why does exhaled air appear as a little white...Ch. 18 - Prob. 26QCh. 18 - Prob. 27QCh. 18 - Prob. 1MCQCh. 18 - Prob. 2MCQCh. 18 - Prob. 3MCQCh. 18 - Prob. 4MCQCh. 18 - Prob. 5MCQCh. 18 - Prob. 6MCQCh. 18 - Prob. 7MCQCh. 18 - Prob. 8MCQCh. 18 - Prob. 9MCQCh. 18 - Prob. 10MCQCh. 18 - Prob. 1PCh. 18 - Prob. 2PCh. 18 - Prob. 3PCh. 18 - Prob. 4PCh. 18 - Prob. 5PCh. 18 - Prob. 6PCh. 18 - (I) A 1.0-mol sample of hydrogen gas has a...Ch. 18 - Prob. 8PCh. 18 - Prob. 9PCh. 18 - Prob. 10PCh. 18 - Prob. 11PCh. 18 - Prob. 12PCh. 18 - Prob. 13PCh. 18 - Prob. 14PCh. 18 - Prob. 15PCh. 18 - Prob. 16PCh. 18 - Prob. 17PCh. 18 - Prob. 18PCh. 18 - Prob. 19PCh. 18 - (I) A group of 25 particles have the following...Ch. 18 - Prob. 21PCh. 18 - Prob. 22PCh. 18 - Prob. 24PCh. 18 - (I) (a) At atmospheric pressure, in what phases...Ch. 18 - Prob. 26PCh. 18 - Prob. 27PCh. 18 - Prob. 28PCh. 18 - Prob. 29PCh. 18 - Prob. 30PCh. 18 - Prob. 31PCh. 18 - Prob. 32PCh. 18 - (II) A pressure cooker is a sealed pot designed to...Ch. 18 - Prob. 34PCh. 18 - Prob. 35PCh. 18 - Prob. 36PCh. 18 - Prob. 37PCh. 18 - Prob. 38PCh. 18 - Prob. 39PCh. 18 - Prob. 40PCh. 18 - Prob. 41PCh. 18 - Prob. 42PCh. 18 - Prob. 43PCh. 18 - Prob. 44PCh. 18 - Prob. 45PCh. 18 - Prob. 46PCh. 18 - Prob. 47PCh. 18 - Prob. 49PCh. 18 - Prob. 53PCh. 18 - A sample of ideal gas must contain at least N =...Ch. 18 - In outer space the density of matter is about one...Ch. 18 - Calculate approximately the total translational...Ch. 18 - (a) Estimate the rms speed of an amino acid, whose...Ch. 18 - The escape speed from the Earth is 1.12 104 m/s,...Ch. 18 - Prob. 63GPCh. 18 - Prob. 66GPCh. 18 - Prob. 69GPCh. 18 - Prob. 71GPCh. 18 - Prob. 72GPCh. 18 - Prob. 73GPCh. 18 - Prob. 74GPCh. 18 - Prob. 75GPCh. 18 - Prob. 76GPCh. 18 - Prob. 77GP
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- 49. (11) We saw in Example 18-8 that the mean free path &M of air molecules at STP is about 9 x 108 m. Estimate the collision frequency f, the number of collisions per unit time.arrow_forward77 SSM Figure 19-28 shows a hy- pothetical speed distribution for particles of a certain gas: P(v) = Cv2 for 0 Vg. Find (a) an expression for C in terms of vo, (b) the average speed of the particles, and (c) their rms speed. %3D Vo Speed Figure 19-28 Problem 77. (4)darrow_forwardi) Evaluate rms speed, the average kinetic energy of a molecule and total random kinetic energy of all the molecules in 5 moles of methane gas at a temperature of 800 K. (Molar mass of methane is 16.04 x 10*mole/kg, and kB = 1.38 x 10-23 J/K)arrow_forward
- (II) Show that the rms speed of molecules in a gas is given by vrms = V3P/p, where P is the pressure in the gas and pis the gas density.arrow_forwardThe mean free path in a sample of gas is 30 nm. The collision feequency is 3 x 109 s-1.Calculate the mean relative speed in m s-1.arrow_forwardConsider a gas enclosed in a box. Let the walls have an area of 0.01m2. Let’s say a few molecules having their x-component of velocity =2m/s, hit a wall parallel to the yz plane. What will be the value of force on the wall in time dt? Let the number of molecules per unit volume be 10 & mass of each molecule be 10-20kg. a) 4*10-19N b) 4*10-21N c) 4/3*10-21N d) 4/3*10-19Narrow_forward
- i) In a cylinder 4 moles of Helium gas (M= 4.02 x 103 kg/mole) is at 30 °C temperature. Calculate for the gas: (R=8.31 J/kg-mole K and KB =1.38 x 10-3 J/K) (a) the average kinetic energy of a molecule, (b) the total random kinetic energy of all the molecules, and (c) the rms speed of a moleculearrow_forward38 Figure 19-24 gives the probability distribution for nitrogen gas. The scale of the horizontal axis is set by v, = 1200 m/s. What are the (a) gas temperature and (b) rms speed of the molecules? v (m/s) (A)darrow_forwardi) List any two uses of Kinetic Theory of gases. In a cylinder 5 moles of Methane gas (M=16.04 x 103 kg/mole) is at ii) 35 °C temperature. Calculate for the gas: (R=8.31 J/kg-mole K and KB =1.38 x 1023 J/K) (a) the average kinetic energy of a molecule, (b) the total random kinetic energy of all the molecules, and (c) the rms speed of a moleculearrow_forward
- (II) Is a gas mostly empty space? Check by assuming that the spatial extent of the gas molecules in air is about lo = 0.3 nm so one gas molecule occupies an approximate volume equal to l . Assume STP.arrow_forward3. In Section 18-1 we assumed the gas molecules made perfectly elastic collisions with the walls of the container. This assumption is not necessary as long as the walls are at the same temperature as the gas. Why?arrow_forward(II) Estimate the number of (a) moles and (b) moleculesof water in all the Earth’s oceans. Assume water covers75% of the Earth to an average depth of 3 kmarrow_forward
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