(b) A motor car tyre contained a fixed mass of air at 27 °C. Its pressure was 220 k N m-2 abe atmospheric pressure. After a 60-minute drive, the air pressure rose to 250 k Nm-2 above atmospheric pressure. What was the new temperature of the air in the tyre, in degrees Celsius, if the volume of air remained constant? Note: (Atmospheric pressure = 100 k Nm-2) %3D

(b) A motor car tyre contained a fixed mass of air at 27 °C. Its pressure was 220 k N m-2 abe atmospheric pressure. After a 60-minute drive, the air pressure rose to 250 k Nm-2 above atmospheric pressure. What was the new temperature of the air in the tyre, in degrees Celsius, if the volume of air remained constant? Note: (Atmospheric pressure = 100 k Nm-2) %3D

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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A manometer was connected to a bulb containing an unknown gas under slight pressure. The gas was allowed to escape through a small pinhole, and the time for the manometer reading to drop from 75 cm to 50 cm was 52 s. When the experiment was repeated using nitrogen (for which M = 28.02 g mol−1) the same fall took place in 42 s. Calculate the molar mass of the unknown gas. Hint: The pressure changes and, as a consequence, so does the rate of effusion; note, however, that the change is the same in both cases.
(a) For an ideal gas equation of state, prove that P P P dP = dn +=dT dv n (b) Suppose 1.000 mol of ideal gas at 300.0 K in a 30.00 L vessel increased in volume by 0.050 L. Use your answer from part (a) to compute the change in the pressure AP. (c) Compare to the exact change in pressure using the ideal gas equation of state to the estimate given by AP.
E1A.7(a) Calculate the mass of water vapour present in a room of volume400 m3 that contains air at 27 °C on a day when the relative humidity is 60 per cent. Hint: Relative humidity is the prevailing partial pressure of water vapour expressed as a percentage of the vapour pressure of water vapour at the same temperature (in this case, 35.6 mbar).E1A.7(b) Calculate the mass of water vapour present in a room of volume250 m3 that contains air at 23 °C on a day when the relative humidity is53 per cent (in this case, 28.1 mbar).
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One of the more commonly used compressed gases is nitrogen (N2), often in large metal cylinders. If a cylinder holds 711 mol of N2 when pressurised to 5.3 x 104 kPa at T = 20oC, how many litres is its capacity?
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| 4. (a) Determine the reduced pressure (P,), volume (V,), and temperature (T, ) for a 50 L sample of water at 23 bar and 400 K. For H20 gas, Te = 647.14 K, Pc = 220.64 bar, and Ve =55.95 L. | (b) Determine the pressure, volume and temperature for a sample of hydrogen which is in a corresponding state with the H2O in part (a). For hydrogen, Te = 32.98 K, Pc = 12.93 bar and Vm,c =64.20 L.
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