Calculate AS when 3.2 moles of n-hexane goes from 298 K and 1 atm to 398 K and 2 atm. The table belowprovides useful data, all at 298 K and 1 atm (reference: Cerdeiriña, Claudio A., et al. "Isobaric thermal expansivityand thermophysical characterization of liquids and liquid mixtures." Physical Chemistry Chemical Physics 3.23(2001): 5230-5236). You may neglect the pressure and temperature dependence of all quantities.CompoundMolar Volume(cm³/mol)IsothermalCompressibility(1/atm)Thermal Expansity(1/K)Cp,m (J/molK)n-hexane133.091.69 x 10-41.38 x 10-3195.66n-heptane147.451.47 x 10-41.246 x 10-3224.64n-dodecane228.551.00 x 10-49.69 x 10-4376.22

Step 1: The entropy of a system defines the amount of disorder in the system. For n-hexane, entropy…

Answered: Calculate AS when 3.2 moles of n-hexane…

University Physics Volume 2

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Chapter2: The Kinetic Theory Of Gases

Section: Chapter Questions

Problem 81AP: One process for decaffeinating coffee uses carbon dioxide ( M=44.0 g/mol) at a molar density of...

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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 m6/mol2 and b=4.286105 m3/mol. Using the van der Waals equation, estimate pressure of CO2 at that temperature and density. `
Using a numerical integration method such as Simpson's rule, find the fraction of molecules in a sample of oxygen gas at a temperature of 250 K that have speeds between 100 m/s and 150 m/s. The molar mass of oxygen (O2) is 32.0 g/mol. A precision to two significant digits is enough.
Assuming the human body is primarily made of water, estimate the number of molecules in it. (Note that water has a molecular mass of 18 g/mol and there are roughly 1024 atoms in a mole)
Gas is contained in an 8.00-L vessel al a temperature of 20.0C and a pressure of 9.00 atm. (a) Determine the number of moles of gas in the vessel. (b) How many molecules are in the vessel?
Using the method of the preceding problem, estimate the fraction of nitric oxide (NO) molecules at a temperature of 250 K that have energies between 3.451021 J and 3.501021 J. `
Find the ratio f(vp)/f(vrms) for hydrogen gas ( M=2.02 g/mol) at a temperature of 77.0 K.
A 100-g piece of copper, initially at 95.0C, is dropped into 200 g of water contained in a 280-g aluminum can; the water and can are initially at 15.0C. What is the final temperature of the system? (Specific heats of copper and aluminum are 0.092 and 0.215 cal/g C. respectively.) (a) 16C (b) 18C (c) 24C (d) 26C (e) none of those answers
(a) Repeat Exercise 31.2, and convert the energy to joules or calories. (b) If all of this energy is converted to thermal energy in the gas, what is its temperature increase, assuming 50.0 cm3 of ideal gas at 0.250atm pressure? (The small answer is consistent with the fact that the energy is large on a quantum mechanical scale but small on a macroscopic scale.)
The mean free path for methane at a temperature of 269 K and a pressure of 1.11105 Pa is 4.81108 m. Find the effective radius r of the methane molecule.
Professional divas sometimes use heliox, consisting of 79% helium and 21% oxygen by mole. Suppose a perfectly rigid scuba tank with a volume of 11 L contains heliox at an absolute pressure of 2.1107 Pa at a temperature of 31 . (a) How many moles of helium and how many moles of oxygen are in the tank? (b) The diver goes down to a point where the sea temperature is 27 while using a negligible amount of the mixture. As the gas in the tank reaches this new temperature, how much heat is removed from it?
(a) If tossing 100 coins, how many ways (microstates) are there to get me three most likely macro states of 49 heads and 51 tails, 50 heads and 50 tails, and 51 heads and 49 tails? (b) What percent of the total possibilities is this? (Consult Table 15.4.)
Find (a) the most probable speed, (b) the average speed, and (c) the rms speed for nitrogen molecules at 295 K.

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