One process for decaffeinating coffee uses carbon dioxide ( M = 44.0 g/mol) at a molar density of about 14,0 mol/m 3 and a temperature of about 60 ℃. (a) Is CO 2 a solid, liquid, gas , or supercritical fluid under those conditions? (b) The van der Waals constants for carbon dioxide are a = 0.3658 Pa ⅇm 6 /mol 2 and b = 4.286 × 10 − 5 m 3 /mol. Using the van der Waals equation, estimate pressure of CO 2 at that temperature and density. `
One process for decaffeinating coffee uses carbon dioxide ( M = 44.0 g/mol) at a molar density of about 14,0 mol/m 3 and a temperature of about 60 ℃. (a) Is CO 2 a solid, liquid, gas , or supercritical fluid under those conditions? (b) The van der Waals constants for carbon dioxide are a = 0.3658 Pa ⅇm 6 /mol 2 and b = 4.286 × 10 − 5 m 3 /mol. Using the van der Waals equation, estimate pressure of CO 2 at that temperature and density. `
One process for decaffeinating coffee uses carbon dioxide (
M
=
44.0
g/mol) at a molar density of about 14,0 mol/m3 and a temperature of about 60 ℃. (a) Is CO2 a solid, liquid, gas, or supercritical fluid under those conditions? (b) The van der Waals constants for carbon dioxide are
a
=
0.3658
Pa ⅇm6/mol2 and
b
=
4.286
×
10
−
5
m3/mol. Using the van der Waals equation, estimate pressure of CO2 at that temperature and density. `
Study of body parts and their functions. In this combined field of study, anatomy refers to studying the body structure of organisms, whereas physiology refers to their function.
An ideal gas in a 1.25-gallon[gal] container is at a temperature of 135 degrees Celsius [°C] and pressure of 2.4 atmospheres [atm]. If the gas is oxygen (formula: O2, molecular weight=32 grams per mole [g/mol]), what is the amount of gas in the container in units of grams [g]?
The ideal gas law relates the pressure P, volume V, and temperature T of an
ideal gas:
PV = nRT
where n is the number of moles and R = 8.3145 J/(K mol). Plots of pressure
versus volume at constant temperature are called isotherms. Plot the isotherms
for one mole of an ideal gas for volume ranging from 1 to 10 m', at tempera-
tures of T = 100, 200, 300, and 400 K (four curves in one plot). Label the
axes and display a legend. The units for pressure are Pa. n=1
(a) A gas occupies an 8.00 mL flexible-walled container. The pressure is doubled, the absolute temperature is quadrupled, and 15% of the gas leaks out. What is the new volume?
(b) A sample of neon has a volume of 0.730 dm3 at a temperature of 21.0 °C. and pressure of 102.5 kPa. If the density of neon is 0.900 g/dm3 at 0 °C and 101.3 kPa, what is the mass of the sample?
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The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY