hi folks please help with this question. 18 ( a,b,c, d) thanks and (2) in terms

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hi folks please help with this question. 18 ( a,b,c, d)
thanks

and (2) in terms of molecules and Boltzmann s constant In words, what is Pascal's Law of the Transmission of Fluid Pressure? (Look it up in another book or on the internet.) Read Olander, Section 1.8, what are U, Q, W, and !? Is energy that is added to a system by heating it considered positive or negative? Is energy that is added to a system by working on it considered positive or negative? 15. 16. Questions for LO3 17. For an ideal gas, sketch six diagrams: Tvs. P, P vs. T, P vs. V, V vs. P, T vs. V, and V vs. T. (Hint: A spreadsheet may be helpful.) One mole of a monatomic ideal gas is initially at 0° C (273.15 K) and 1 atm (101.3 kPa). The gas is then compressed by a frictionless piston in a cylinder that is wrapped with a cooling coil. 18. University of California, Berkeley College of Engineering

Explanation / Answer

18. (a) Applying ideal gas equation,

P V = n R T

(101325 Pa) (V) = (1) (8.314) (273.15)

V = 0.0224 m^3 Or 22.4 L ............Ans

(b) For isothermal process,

W = n R T ln(Vf / Vi)

W = (1 x 8.314 x 273.15) ln(0.5)

W = - 1574.11 J .........Ans

(C) P V = constant

V is halved so P will get doubled.

Pf = 2P = 2 atm Or 202.6 kPa ........Ans

(d) Temperature is constant hence internal energy will not change.

so change in internal energy = 0

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