The air is compressed adiabatically. Initially the air is at 100 kPa, 300K and has a volume of 1 m. After compression the air is at 2,000.7 kPa and has a volume of 0.11765 m. The air is an ideal gas with constant specific heats equal to Cp = 1.005 kJ/kgK and Cy = 0.718 kJ/kgK. What is the temperature of the air after compression in units of K? Select the answer that is closest to the true value. A) 706 B)571 C)811 DI 396

Q: Air (MW=29 kg/kmol) at 115.00 kPa and 285.00 K is compressed steadily to 600.0 kPaThe mass flow rate…

A: The inlet temperature of the air, The inlet pressure isThe exit pressure is The heat loss, The…

Q: Qout = 45 kJ %3D A closed, rigid tank whose volume is 2 m contains 4.65 kg of air with the initial…

A:

Q: Inside a piston-cylinder device there is 5 kg of a moist water vapor at 125 kPa. At the beginning…

A:

Q: A fixed amount of water is enclosed in a cylinder and piston assembly. The mass of the water is 20…

A: Given-  P1 = 2000 kPa…

Q: As shown in the figure, a piston-cylinder assembly with a stopper contains R-410A, a refrigerant at…

A:

Q: 3. A room is to be heated by 1000 kg of a liquid contained in a tank placed in the room. The room is…

A: The mass of the liquid is m=1000 kg The final temperature of the liquid is Tf=25°C=298 K The heat…

Q: Shown in the figure, an insulated rigid tank is divided into two equal parts by a partition.…

A: Giveninsulated tankm=4kgP1=600kPaT1=300KR=0.287 kJ/kgKCv=0.7180 kJ/kgK∆U=mCvT2-T1

Q: Subcooled water at 5°C is pressurised to 350 kPa with no increase in temperature, and then passed…

A:

Q: A frictionless piston-cylinder device contains 2.5 kg of nitrogen at 100 kPa and 250 K. Nitrogen is…

A: According to the given dataThe mass of nitrogen is m = 2.5 kgThe initial pressure is P1 = 100 kPaThe…

Q: Air, 5.37 kg, is compressed in a piston‑cylinder device from 91.3 kPa and 65.3 ∘C to 195.2 kPa in an…

A:

Q: Required information Two kilograms of saturated water vapor at 600 kPa are contained in a…

A:

Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.