The vapour pressure of a substance describes how readily molecules at the surface of the substance enter the gaseous phase. At the boiling point of a liquid, the liquid's vapour pressure is equal to or greater than the atmospheric pressure exerted on the surface of the liquid. Since the atmospheric pressure at higher elevations is lower than at sea level, the boiling point of water decreases as the elevation increases. The atmospheric pressure at sea level is 760 mmHg. This pressure decreases by 6.50 mmHg for every 100 m increase in elevation. Part A What is the boiling point of water at an elevation of 7600 m ? Express your answer with the appropriate units using three significant figures. Elevation Pressure > View Available Hint(s) Om 760 mmHg 1000 m 695 mmHg HÀ 2000 m 630 mmHg Ω The boiling point of water decreases 0.05 °C for every 1 mmHg drop in atmospheric pressure. T = 75.30 C Enter your answer using units of temperature. No credit lost. Try again.

The vapour pressure of a substance describes how readily molecules at the surface of the substance enter the gaseous phase. At the boiling point of a liquid, the liquid's vapour pressure is equal to or greater than the atmospheric pressure exerted on the surface of the liquid. Since the atmospheric pressure at higher elevations is lower than at sea level, the boiling point of water decreases as the elevation increases. The atmospheric pressure at sea level is 760 mmHg. This pressure decreases by 6.50 mmHg for every 100 m increase in elevation. Part A What is the boiling point of water at an elevation of 7600 m ? Express your answer with the appropriate units using three significant figures. Elevation Pressure > View Available Hint(s) Om 760 mmHg 1000 m 695 mmHg HÀ 2000 m 630 mmHg Ω The boiling point of water decreases 0.05 °C for every 1 mmHg drop in atmospheric pressure. T = 75.30 C Enter your answer using units of temperature. No credit lost. Try again.

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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