The graph below shows the distributions of molecular speeds of a gas measured at three different temperatures. Select the correct statem 0.0007 0.0006 - B 0.0005 0.0004 0.0003 0.0002 - 0.0001 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 v/103 m s- The temperature has no effect on the root mean square velocity of a gas Curve "A" corresponds to the highest temperature Curve "C" corresponds to the highest temperature Curve "B" corresponds to the highest temperature f (U)/s m-1

The graph below shows the distributions of molecular speeds of a gas measured at three different temperatures. Select the correct statem 0.0007 0.0006 - B 0.0005 0.0004 0.0003 0.0002 - 0.0001 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 v/103 m s- The temperature has no effect on the root mean square velocity of a gas Curve "A" corresponds to the highest temperature Curve "C" corresponds to the highest temperature Curve "B" corresponds to the highest temperature f (U)/s m-1

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 1.56 mol sample of O2 gas is confined in a 37.6 liter container at 20.9 °C. If 1.56 mol of H2 gas is added and the volume and temperature of the system are held constant, explain in at least one sentence what will happen to... a. The average molecular speed of the system. In your answer, you should indicate whether the average molecular speed will increase, decrease or remain the same, and also indicate your reasoning why. b. The average kinetic energy of the system. In your answer, you should indicate whether the average kinetic energy will increase, decrease or remain the same, and also indicate your reasoning why.
Perform the conversions. 743.5 mmHg 0.981 atm = %3D atm Torr 420.4 kPa = 795.2 mmHg atm Pa
Consider equimolar samples of different ideal gases at the same volume and temperature. Gas A has a higher molar mass than gas B. Compare the pressures. A>B A=B A<B Compare the rms speeds. A>B A=B A<B Compare the average kinetic energies. A>B A=B A<B Consider equimolar samples of the same ideal gas at the same volume, but different temperatures. Sample C is at a higher temperature than sample D. Compare the pressures. C>D C=D C<D Compare the rms speeds. C>D C=D C<D Compare the average kinetic energies. C>D C=D C<D Consider equimolar samples of the same ideal gas at the same temperature, but different volumes. Sample E has a larger volume than sample F. Compare the pressures. E>F E=F E<F Compare the rms speeds. E>F E=F E<F Compare the average kinetic energies. E>F E=F E<F
1. A 0.678 gram sample of gas occupies 0.214 L at standard conditions; what is the molar mass of the gas? 2. A sample of gas occupies 250. mL at 37°C and 730, torr; what volume would the gas occupy at standard conditions? 3. A 5.00 mL sample of an unknown liquid is vaporized in a flask having a volume of 285 mL. At 100°C, 0.4168 g of the vapor exerts a pressure of 740 torr. Calculate the gram molar mass of the unknown liquid. 4. Calculate the density of oxygen gas at 50°C and 750. torr. 5. Calculate the density of H2S at STP. 86
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