Physics for Scientists and Engineers, Books a la Carte Edition
4th Edition
ISBN: 9780321666680
Author: GIANCOLI, Douglas C.
Publisher: Pearson College Div
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 18.1, Problem 1BE
Now you can return to the Chapter-Opening Question, page 476, and answer it correctly. Try to explain why you may have answered differently the first time.
CHAPTER-OPENING QUESTION—Guess now!
The typical speed of an air molecule at room temperature (20°C) is
- (a) nearly at rest (< 10 km/h).
- (b) on the order of 10 km/h.
- (c) on the order of 100 km/h.
- (d) on the order of 1000 km/h.
- (e) nearly the
speed of light .
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
What is third law of thermodynamics? How does it lead us to the concept of absolute zero?
You are planning a birthday party for your niece and need to make at least 4 gallons of Kool-Aid, which you would like to cool down to 32 oF (0 °C) before the party begins. Unfortunately, your refrigerator is already so full of treats that you know there will be no room for the Kool-Aid. So, with a sudden flash of insight, you decide to start with 4 gallons (1 gallon = 3.7854 liters, and a liter (L) is 0.001 cubic meters) of the coldest tap water you can get, which you determine is 50 °F (10 °C), and then cool it down with a 1- quart (1/4 of a gallon) chunk of ice you already have in your freezer. The owner's manual for your refrigerator states that when the freezer setting is on high, the temperature is -20 °C. Will your plan work? You assume that the density of the Kool-Aid is about the same as the density of water. You look in your physics book and find that the density of water is 1.0 g/cm3 (1kg/L), the density of ice is 0.9 g/cm3 (0.9kg/L), the heat capacity of water is 4200 J /…
Let’s assume dry air behaves like an ideal gas and has a molar mass of 28.8 g/mol.a) What is the approximate density of dry air at sea level when the air temperature is 32°C? Hint: How is the unit of standard atmosphere (symbol atm) defined?b) Briefly show and/or explain why this assumption for the molar mass of dry air is reasonable.c) Briefly show and/or explain how the density of air would change with increasing humidity.
Chapter 18 Solutions
Physics for Scientists and Engineers, Books a la Carte Edition
Ch. 18.1 - In a mixture of the gases oxygen and helium, which...Ch. 18.1 - Now you can return to the Chapter-Opening...Ch. 18.1 - If you double the volume of a gas while keeping...Ch. 18.1 - By what factor must the absolute temperature...Ch. 18.4 - As the air warms up in the afternoon, how would...Ch. 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 - Is temperature a macroscopic or microscopic...Ch. 18 - Explain why the peak of the curve for 310 K in...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 - Prob. 14QCh. 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. 27QCh. 18 - Prob. 1PCh. 18 - Prob. 2PCh. 18 - (I) By what factor will the rms speed of gas...Ch. 18 - (I) A gas is at 20C. To what temperature must it...Ch. 18 - (I) What speed would a 1.0-g paper clip have if it...Ch. 18 - (I) A 1.0-mol sample of hydrogen gas has a...Ch. 18 - (I) Twelve molecules have the following speeds,...Ch. 18 - (II) The rms speed of molecules in a gas at 20.0C...Ch. 18 - (II) If the pressure in a gas is tripled while its...Ch. 18 - Prob. 10PCh. 18 - (II) Show that for a mixture of two gases at the...Ch. 18 - (II) What is the rms speed of nitrogen molecules...Ch. 18 - (II) (a) For an ideal gas at temperature T show...Ch. 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 - (I) CO2 exists in what phase when the pressure is...Ch. 18 - (I) (a) At atmospheric pressure, in what phases...Ch. 18 - Prob. 25PCh. 18 - Prob. 26PCh. 18 - Prob. 27PCh. 18 - Prob. 28PCh. 18 - Prob. 29PCh. 18 - Prob. 30PCh. 18 - (II) If the air pressure at a particular place in...Ch. 18 - (II) What is the mass of water in a closed room...Ch. 18 - Prob. 33PCh. 18 - Prob. 34PCh. 18 - (II) A pressure cooker is a sealed pot designed to...Ch. 18 - (II) When using a mercury barometer (Section 136),...Ch. 18 - (II) If the humidity is 45% at 30.0C, what is the...Ch. 18 - Prob. 38PCh. 18 - Prob. 40PCh. 18 - (II) For oxygen gas, the van der Waals equation of...Ch. 18 - Prob. 44PCh. 18 - (II) At about what pressure would the mean free...Ch. 18 - Prob. 46PCh. 18 - (II) A very small amount of hydrogen gas is...Ch. 18 - Prob. 48PCh. 18 - Prob. 49PCh. 18 - Prob. 50PCh. 18 - Prob. 51PCh. 18 - Prob. 53PCh. 18 - Prob. 54PCh. 18 - Prob. 55PCh. 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. 61GPCh. 18 - Prob. 62GPCh. 18 - Consider a container of oxygen gas at a...Ch. 18 - In humid climates, people constantly dehumidify...Ch. 18 - Prob. 65GPCh. 18 - Prob. 66GPCh. 18 - Prob. 67GPCh. 18 - At room temperature, it takes approximately 2.45 ...Ch. 18 - Calculate the total water vapor pressure in the...Ch. 18 - Prob. 70GPCh. 18 - The density of atoms, mostly hydrogen, in...Ch. 18 - Prob. 72GPCh. 18 - A sauna has 8.5 m3 of air volume, and the...Ch. 18 - Prob. 74GPCh. 18 - Prob. 75GP
Additional Science Textbook Solutions
Find more solutions based on key concepts
68. All bulbs are identical in the circuits. A voltmeter is connected across a single bulb in each circuit to m...
Conceptual Physical Science (6th Edition)
22. * A person exerts a 15-N force on a cart attached to a spring and holds the cart steady. The cart is displa...
College Physics
With x x0 = h and a = g, Equation 2.11 gives the speed of an object thrown downward with initial speed v0 afte...
Essential University Physics (3rd Edition)
What is the role of “loose” electrons in heat conductors?
Conceptual Physics (12th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Describe the thermodynamic systems?arrow_forwardThe density of gasoline is 7.30 x 102 kg/m3 at 0°C. Its average coefficient of volume expansion is 9.60 x 10-4(°C)-1, and note that 1.00 gal = 0.00380 m3. (a) Calculate the mass of 10.0 gal of gas at 0°C. (b) If 1.000 m3 of gasoline at 0°C is warmed by 20.0°C, calculate its new volume. (c) Using the answer to part (b), calculate the density of gasoline at 20.0°C. (d) Calculate the mass of 10.0 gal of gas at 20.0°C. (e) How many extra kilograms of gasoline would you get if you bought 10.0 gal of gasoline at 0°C rather than at 20.0°C from a pump that is not temperature compensated?arrow_forwardWhat is the temp of the gas at A & B? Also, how could I find other points on the diagram that would have the same temperature?arrow_forward
- Use the ideal gas law, “PV-nRT”, and the universal gas constant R = 0.0821 L*atm to solve the following problems: K*mol If pressure is needed in kPa then convert by multiplying by 101.3kPa / 1atm to get R =8.31 kPa*L / (K*mole). Show your answers legibly, concisely, and completely. Use separate sheet of paper. If I have 4 moles of a gas at a pressure of 5.6 atm and a volume of 12 liters, what is the temperature?arrow_forwardWhat else are you studying this term? Give an example ofa popular equation or formula from another course (thermodynamics,strength of materials, or the like) that doesnot satisfy the principle of dimensional homogeneity.Explain what is wrong and whether it can be modifi ed to behomogeneous.arrow_forwardWhat is enthalpy in thermodynamics? What is the mathematical expression for the same?arrow_forward
- If you have 9 moles of a monoatomic ideal gas, how much heat is required to raise the temperature of this gas from 264.3K to 277.6K if the volume of the gas remains constant during the heating? Note: It is understood that your answer is in units of Joulesarrow_forwardOur cycle of normal breathing takes place every 5 seconds. Velocity of air flow,y, measured in liters per second, after x seconds is modeled by:Velocity of air flow is positive when we inhale and negative when we exhale.Within each breathing cycle, when are we inhaling at a rate of 0.3 liter per second? Round to the nearest tenth of a second.arrow_forwardWhat is the physical explanation of temperature? What type of energy is temperature? Explain.arrow_forward
- Lead has a density of 11.3 103 kg/m3 at 0C. (a) What is the density of lead at 90C? (b) Based on your answer to part (a), now consider a situation in which you plan to invest in a gold bar. Would you be better off buying it on a warm day? Explain.arrow_forwardIf we have 35.54L of O2 gas at STP, how many moles of this gas do we have? Note: it is understood that the unit of your answer is some number of moles, however do not explicitly include units in your answer. Enter only a number. If you do enter a unit ("mol" in this case), you answer will be counted wrong. (STP means "standard temperature and pressure," which is 1 atmosphere of pressure or 101,325 Pa, and 273K).arrow_forwardHi, could I get some help with this macro-connection physics problem involving the Ideal Gas Law? The set up is: What is the average volume in nm3 (cubic nanometers) taken up by molecules of an ideal gas at room temperature (taken as 300 K), and 1 atm of pressure or 101325 N/m2 to 4 digits of precision if kB = 1.38e-23 J/K and 1 nm = 10-9 m? Thank you.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY