Thermodynamics: Mass and Energy Analysis Of Control Volumes What is the change in enthalpy, in kJ/kg, of oxygen as its temperature changes from 150 to 250◦C? Is thereany difference if the temperature change were from −50 to 100◦C? Does the pressure at the beginning andend of this process have any effect on the enthalpy change?

Thermodynamics: Mass and Energy Analysis Of Control Volumes What is the change in enthalpy, in kJ/kg, of oxygen as its temperature changes from 150 to 250◦C? Is thereany difference if the temperature change were from −50 to 100◦C? Does the pressure at the beginning andend of this process have any effect on the enthalpy change?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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0.25kg/s of Carbon Dioxide (R = 0.1889 kJ/kg-K, k = 1.289) undergo a certain process in a closesystem from initial volume and temperature of 268cm3 and 134K to a final volume and temperature of 804cm3 and 402K respectively. From the data given, perform necessary analysis in determining the type of process to further solve the following questions as follow:a. Work done by/on the system (kJ/s)b. Change in Entropy (kW/K)c. Heat added/rejected by the system (kJ/s) include also the graph of this problem
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As shown, a piston-cylinder assembly contains 5 g of air holding the piston against the stops. The air, initially at 3 bar, 600 K, is slowly cooled until the piston just begins to move downward in the cylinder. The air behaves as an ideal gas, g = 9.81 m/s2, and friction is negligible. Sketch the process of the air on a p–V diagram labeled with the temperature and pressure at the end states. Also determine the heat transfer, in kJ, between the air and its surroundings.
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Thermodynamics please help me to answer this question
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A spring-loaded piston-cylinder device contains m= 1kg of carbon dioxide. Initially, the spring has no force on the piston and P₁ = 500kPa, T₁=150K, V₁ = 0.1m³. 1 Heat is transferred to the gas, causing the piston to rise and to compress the spring. At the state 2, T₂=900K, V₂=0.3m³. The gas is an ideal gas. 2 (1)How to determine the pressure P at the state 2? 2 O A. O B. OC. O D. P1, V1, T1 P. = 2 V T V T 1 V T 2 V T 1 V V 1 2 V 2 T 1 2 T T 1 2 1 P₁ P₁ P₁ P₁ P2, V2, T2
A spring-loaded piston-cylinder device contains of m=1 kg carbon dioxide. Initially, the spring has no force on the piston and P₁=500kPa, T = 150K, V₁ = 0.1m³. Heat is transferred to the gas, causing the piston to rise and to compress the spring. At the state 2, T₁=900K, V₂=0.3m³. The gas is an ideal gas. 2 (4)What's the boundary work against piston W ?_____in kj? b-p P1, V1, T1 P2, V2, T2
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