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How many moles of air must escape from a 10 m 80 m 50

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55. How many moles of air must escape from a 10-m × 8.0-m × 5.0-m room when the temperature is raised from 0°C to 20°C? Assume the pressure remains unchangedat one atmosphere while the room is heated.
56. Estimate the volume of a helium-filled balloon at STP if it is to lift a payload of 500 kg. The density of air is 1.29 kg/m3 and helium has a density of 0.178 kg/m3
57. Tricia puts 44 g of dry ice (solid CO2) into a 2.0-L container and seals the top. The dry ice turns to gas at room temperature (20°C). Find the pressure increase in the2.0-L container.
58. The mass of a hot-air balloon and its cargo (not including the air inside) is 200 kg. The air outside is at a temperature of 10°C and a pressure of 1 atm = 105 N/m2.The volume of the balloon is 400 m3. Which temperature below of the air in the balloon will allow the balloon to just lift off?
59. 9.0 g of water in a 2.0-L pressure vessel is heated to 500°C. What is the pressure inside the container?
60. A spherical air bubble originating from a scuba diver at a depth of 18.0 m has a diameter of 1.0 cm. What will the bubble’s diameter be when it reaches the surface?
61. A tank with a volume of 0.150 m3 contains 27.0°C helium gas at a pressure of 100 atm. How many balloons can be blown up if each filled balloon is a sphere 30.0cm in diameter at 27.0°C and absolute pressure of 1.20 atm?
62. The ideal gas law treats gas as consisting of:
63. The sulfur hexafluoride molecule consists of one sulfur atom and six fluorine atoms. The atomic masses of sulfur and fluorine are 32.0 u and 19.0 u respectively.One mole of this very heavy gas has what mass?
64. A room has a volume of 60 m3 and is filled with air of an average molecular mass of 29 u. What is the mass of the air in the room at a pressure of 1.0 atm andtemperature of 22°C?
65. Different units can be used for length: m and cm, and of these two, m is the larger by a factor of 100. Different units can also be used for R: (1) J/molK, (2)Latm/molK, and (3)(N/m2)m3/molK. Which of these units for R is the largest?
66. Two one-liter containers each contain 10 moles of a gas. The temperature is the same in both containers. Container A holds helium (molecular mass = 4 u), andContainer B holds oxygen (molecular mass = 16 u). Which container has the higher pressure and by what factor?

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Chapter 18 / Exercise 26
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Term
Summer
Professor
Ford,J
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Physics for Scientists and Engineers
The document you are viewing contains questions related to this textbook.
Chapter 18 / Exercise 26
Physics for Scientists and Engineers
Jewett/Serway
Expert Verified

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