Use vapor pressure. A student leaving campus for spring break wants to make sure the air in his dorm room has a high water vapor pressure so that his plants are comfortable. The dorm room measures 3.53 m x 4.98 m x 3.91 m and the student places a pan containing 1.85 L of water in the room. Assume that the room is airtight, that there is no water vapor in the air when he closes the door, and that the temperature remains a constant 21 °C. The vapor pressure of water at 21 °C is 18.7 mm Hg. (a) Calculate the pressure that the water vapor would exert if all of the liquid water evaporated. mm Hg (b) Will all of the water in the pan evaporate? yes no

Use vapor pressure. A student leaving campus for spring break wants to make sure the air in his dorm room has a high water vapor pressure so that his plants are comfortable. The dorm room measures 3.53 m x 4.98 m x 3.91 m and the student places a pan containing 1.85 L of water in the room. Assume that the room is airtight, that there is no water vapor in the air when he closes the door, and that the temperature remains a constant 21 °C. The vapor pressure of water at 21 °C is 18.7 mm Hg. (a) Calculate the pressure that the water vapor would exert if all of the liquid water evaporated. mm Hg (b) Will all of the water in the pan evaporate? yes no

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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Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.

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Use vapor pressure.
A student leaving campus for spring break wants to make sure the air in his dorm room has a high water vapor
pressure so that his plants are comfortable. The dorm room measures 3.53 m x 4.98 m x 3.91 m and the student
places a pan containing 1.85 L of water in the room. Assume that the room is airtight, that there is no water
vapor in the air when he closes the door, and that the temperature remains a constant 21 °C. The vapor pressure
of water at 21 °C is 18.7 mm Hg.
(a) Calculate the pressure that the water vapor would exert if all of the liquid water evaporated.
mm Hg
(b) Will all of the water in the pan evaporate?
yes
no
V

Use the two-point version of the Clausius-Clapeyron equation.
The vapor pressure of liquid lead is 400. mm Hg at 1.90x10³ K. Assuming that AHvap for Pb (181 kJ/mol) does not
change significantly with temperature, calculate the vapor pressure of liquid Pb at 1.92×10³ K.
mm Hg

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