subject
Chemistry, 16.10.2019 19:10 aiguillen6228

You want to determine how effectively evaporization of water cools your 60 kg body at 20°c. at atmo- spheric pressure and 100°c, ahan = 40.66 kj mol- for liquid water. take cp. m of liquid and gaseous waters to be independent of temperature with constant values of 75.4 and 33.76 jk-mol-, respectively. a) devise a path for the process h2o(1, 20°c) → h2o(g, 20°c). (hint: ah is a state function.) b) determine ah vap at 20°c from your path. [43.99 kj mol-'] c) it is 20°c, you are drenched by rain, and your clothes absorb 1.00 l of water. it is also exceedingly windy so this water evaporates very quickly. determine the amount of heat at 20°c required for all of the water to evaporate. (m1,0 = 18.015 g mol-', dh,0 = 0.9928 g ml-' at 20°c) d) assume that the specific heat capacity of you and your clothes is the same as that of water (4.184 j k- g-) and determine what the drop in your body temperature would be due to this evaporation. [9.7 k]

ansver
Answers: 3

Other questions on the subject: Chemistry

image
Chemistry, 22.06.2019 05:30, jameskarbar9p8c9d2
Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat
Answers: 1
image
Chemistry, 22.06.2019 07:30, linz6227
In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids
Answers: 2
image
Chemistry, 22.06.2019 08:30, omoaye
Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.
Answers: 3
image
Chemistry, 22.06.2019 15:00, levelebeasley1
Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.
Answers: 2
You know the right answer?
You want to determine how effectively evaporization of water cools your 60 kg body at 20°c. at atmo-...

Questions in other subjects:

Konu
Business, 30.03.2021 17:30
Konu
History, 30.03.2021 17:30