Chapter 5, Problem 5.36CU

On the Kelvin scale, a temperature of 27 °C has a corresponding value of

Temperature is an extensive property. True or False? Explain.

1. One pound of an ideal gas undergoes an isentropic process from 95.3psig and a volume of 0.6ft3 to a final volume of 3.6 ft3. If cp = 0.124Btu/lb-R and cv = 0.093 Btu/lb-R, determine the final temperature of the gas (°F) and the work done by the gas (Btu). Draw a figure, or graph that will support the problem. Explain each step by step formula.

A certain ideal gas has the following properties: Cpo = A + (B/T) where A and B are constants and T is temperature in °K and Cpo has units kJ / K /kg. The gas constant is R = 0.25 kJ/K/kg and the constants A = 1.25, B = 173.8029748. For T₁ = 300 °K and T₂ = 400 °K, determine the change in specific internal energy, (u₂-u₁ ) in kJ/kg. You may NOT assume constant specific heats.

true or false A mass of 2.25 kg of Nitrogen occupying 1.5 m3 is heated from 25°C at a constant volume. Take gas constant is 297 J/kgK, then its initial pressure would be approximately 0.133 x 106 N/m2.

THERMODYNAMICS (UPVOTE WILL BE GIVEN. PLEASE WRITE THE COMPLETE SOLUTIONS. NO LONG EXPLANATION NEEDED. ANSWER IN 3 DECIMAL PLACES. BOX THE FINAL ANSWERS. PLEASE ANSWER ALL) An unknown ideal gas (MW=10 kg/kmol and k=1.3) closed system underwent in a cycle described by the following processes below:Process 1-2 : From 40°C and 1 bar to 3 bars isentropicallyProcess 2-3: Polytropically to 5 bars at n=2Process 3-1: Isometrically Find the pressure at the 3rd state in bars and overall change of entropy for the cycle in kJ/kg-K.

Electricity consumption can be measured in calories just like food. TRUE or FALSE Increasing the absolute temperature of an ideal gas by 20% also increases its internal energy by 20%. TRUE or FALSE

Today forecast is 45°F/27°F. Express the difference between the maximum and minimum temperatures in K, C, and °R.

thermodynamics