Concept explainers
Professional divas sometimes use heliox, consisting of 79% helium and 21% oxygen by mole. Suppose a perfectly rigid scuba tank with a volume of 11 L contains heliox at an absolute pressure of
Want to see the full answer?
Check out a sample textbook solutionChapter 2 Solutions
University Physics Volume 2
Additional Science Textbook Solutions
College Physics
An Introduction to Thermal Physics
Modern Physics
Sears And Zemansky's University Physics With Modern Physics
The Cosmic Perspective (8th Edition)
The Cosmic Perspective Fundamentals (2nd Edition)
- On a hot summer day, the density of air at atmospheric pressure at 35.0C is 1.1455 kg/m3. a. What is the number of moles contained in 1.00 m3 of an ideal gas at this temperature and pressure? b. Avogadros number of air molecules has a mass of 2.85 102 kg. What is the mass of 1.00 m3 of air? c. Does the value calculated in part (b) agree with the stated density of air at this temperature?arrow_forward(a) An ideal gas occupies a volume of 1.0 cm3 at 20.C and atmospheric pressure. Determine the number of molecules of gas in the container, (b) If the pressure of the 1.0-cm3 volume is reduced to 1.0 1011 Pa (an extremely good vacuum) while the temperature remains constant, how many moles of gas remain in the container?arrow_forwardCylinder A contains oxygen (O2) gas, and cylinder B contains nitrogen (N2) gas. If the molecules in the two cylinders have the same rms speeds, which of the following statements is false? (a) The two gases haw different temperatures. (b) The temperature of cylinder B is less than the temperature of cylinder A. (c) The temperature of cylinder B is greater than the temperature of cylinder A. (d) The average kinetic energy of the nitrogen molecules is less than the average kinetic energy of the oxygen molecules.arrow_forward
- A vertical cylinder of cross-sectional area A is fitted with a tight-fitting, frictionless piston of mass m (Fig. P16.56). The piston is not restricted in its motion in any way and is supported by the gas at pressure P below it. Atmospheric pressure is P0. We wish to find die height h in Figure P16.56. (a) What analysis model is appropriate to describe the piston? (b) Write an appropriate force equation for the piston from this analysis model in terms of P, P0, m, A, and g. (c) Suppose n moles of an ideal gas are in the cylinder at a temperature of T. Substitute for P in your answer to part (b) to find the height h of the piston above the bottom of the cylinder.arrow_forwardA sealed cubical container 20.0 cm on a side contains a gas with three times Avogadros number of neon atoms at a temperature of 20.0C. (a) Find the internal energy of the gas. (b) Find the total translational kinetic energy of the gas. (c) Calculate the average kinetic energy per atom, (d) Use Equation 10.13 to calculate the gas pressure. (e) Calculate the gas pressure using the ideal gas law (Eq. 10.8).arrow_forwardA cylinder with a piston holds 0.50 m3 of oxygen at an absolute pressure of 4.0 atm. The piston is pulled outward, increasing the volume of the gas until the pressure drops to 1.0 atm. If the temperature stays constant, what new volume does the gas occupy? (a) 1.0 m3 (b) 1.5 m3 (c) 2.0 m3 (d) 0.12 m3 (e) 2.5 m3arrow_forward
- You blow up a spherical balloon to a diameter of 50.0 cm until the absolute pressure inside is 1.25 atm and the temperature is 22.0°C. Assume that all the gas is N₂, of molar mass 28.0 g/mol. (a) Find the mass of a single N₂ molecule.arrow_forwardThe air we breathe into our lungs is a mixture of gases. While the atmosphere is mostly composed of nitrogen and oxygen, there are other gases too. One of these is a monatomic gas that has an rms speed of 428 m/s in your lungs at 20.0 °C. (a) Calculate its molecular weight. (b) What gas is this? (a) Number (b) Unitsarrow_forwardA spherical weather balloon is designed to inflate to a maximum diameter of 17.0 m at its working altitude, where the air pressure is 0.380 atm and the temperature is 194.0 K. If the balloon is filled at atmospheric pressure and temperature 293.0 K, what is its radius at lift-off? Treat the gas as an ideal gas. (Units: m)arrow_forward
- A sealed cubical container 13.0 cm on a side contains a gas with four times Avogadro's number of xenon atoms at a temperature of 28.0°C. HINT (a) Find the internal energy (in J) of the gas. J (b) The total translational kinetic energy (in J) of the gas. J (c) Calculate the average kinetic energy (in J) per atom. J (d) Use P = 2 3 N V 1 2 mv2 to calculate the gas pressure (in Pa). Pa (e) Calculate the gas pressure (in Pa) using the ideal gas law (PV = nRT).arrow_forwardAn ideal gas at 12.3 °C and a pressure of 1.64 x 105 Pa occupies a volume of 2.77 m³. (a) How many moles of gas are present? (b) If the volume is raised to 5.01 m³ and the temperature raised to 27.3 °C, what will be the pressure of the gas? (a) Number A (b) Number Units Unitsarrow_forwardTwo small containers, each with a volume of 125 cm3 contain helium gas at 17 ⁰F and 1.00 atm pressure. The two containers are joined by a small open tube of negligible volume allowing gas to flow from one container to the other. What common pressure will exist in the two containers if the temperature of one container is raised to 120 °F while the other container is kept at 17 °F?arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning