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At 0 °C, fewer than half the molecules move at speeds Ump = the speed exhibited by the largest At 100 °C, more than Uay = the average (mean) speed of all Urms = the speed of a molecule whose kinetic half the molecules number of molecules the molecules move at speeds greater than 500 m/s. energy is equal to the average (mean) kinetic energy of all the molecules greater than 500 m/s. 0°C 100 °C || 5 x 102 5 x 102 Molecular speed (m/s) 10 x 102 10 x 102 Molecular speed (m/s) (a) (b) A Figure 10.12 Distribution of molecular speed. The relative area under the curve for a range of speeds gives the relative fraction of molecules that have those speeds. (b) Position of most probable (Ump), average (uav), and root- mean-square (urms) speeds of gas molecules. The data shown here are for nitrogen gas at 0 °C. cular speeds for nitrogen gas. (a) The effect of temperature on Activate VWindows Fraction of molecules Fraction of molecules

At 0 °C, fewer than half the molecules move at speeds Ump = the speed exhibited by the largest At 100 °C, more than Uay = the average (mean) speed of all Urms = the speed of a molecule whose kinetic half the molecules number of molecules the molecules move at speeds greater than 500 m/s. energy is equal to the average (mean) kinetic energy of all the molecules greater than 500 m/s. 0°C 100 °C || 5 x 102 5 x 102 Molecular speed (m/s) 10 x 102 10 x 102 Molecular speed (m/s) (a) (b) A Figure 10.12 Distribution of molecular speed. The relative area under the curve for a range of speeds gives the relative fraction of molecules that have those speeds. (b) Position of most probable (Ump), average (uav), and root- mean-square (urms) speeds of gas molecules. The data shown here are for nitrogen gas at 0 °C. cular speeds for nitrogen gas. (a) The effect of temperature on Activate VWindows Fraction of molecules Fraction of molecules

Chemistry
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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Estimate the fraction of molecules at 100 °C with speeds less than 300 m>s.

At 0 °C, fewer than half the molecules move at speeds Ump = the speed exhibited by the largest At 100 °C, more than Uay = the average (mean) speed of all Urms = the speed of a molecule whose kinetic half the molecules number of molecules the molecules move at speeds greater than 500 m/s. energy is equal to the average (mean) kinetic energy of all the molecules greater than 500 m/s. 0°C 100 °C || 5 x 102 5 x 102 Molecular speed (m/s) 10 x 102 10 x 102 Molecular speed (m/s) (a) (b) A Figure 10.12 Distribution of molecular speed. The relative area under the curve for a range of speeds gives the relative fraction of molecules that have those speeds. (b) Position of most probable (Ump), average (uav), and root- mean-square (urms) speeds of gas molecules. The data shown here are for nitrogen gas at 0 °C. cular speeds for nitrogen gas. (a) The effect of temperature on Activate VWindows Fraction of molecules Fraction of molecules
Transcribed Image Text:At 0 °C, fewer than half the molecules move at speeds Ump = the speed exhibited by the largest At 100 °C, more than Uay = the average (mean) speed of all Urms = the speed of a molecule whose kinetic half the molecules number of molecules the molecules move at speeds greater than 500 m/s. energy is equal to the average (mean) kinetic energy of all the molecules greater than 500 m/s. 0°C 100 °C || 5 x 102 5 x 102 Molecular speed (m/s) 10 x 102 10 x 102 Molecular speed (m/s) (a) (b) A Figure 10.12 Distribution of molecular speed. The relative area under the curve for a range of speeds gives the relative fraction of molecules that have those speeds. (b) Position of most probable (Ump), average (uav), and root- mean-square (urms) speeds of gas molecules. The data shown here are for nitrogen gas at 0 °C. cular speeds for nitrogen gas. (a) The effect of temperature on Activate VWindows Fraction of molecules Fraction of molecules
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