Chapter 7, Problem 7.74P

21. Find the change in internal energy of 5lbm of oxygen gas when the temperature changes from 0.157BTU 100°F to 120°F, c lbm-R V

Q2) A piston/cylinder has ammonia at 1600 kPa, 100°C with a volume of 0.1 m3. The piston is loaded with a linear spring and outside ambient is at 20 °C. The ammonia now cools down to 10 °C at which point it has a quality of 10%. Find the work, the heat transfer and the total entropy generation in the process. NH₂

I need the answer as soon as possible

There are 100 kg/ min of water entering a heating element at 5 deg C and leaves at 40 deg C. Find the heat addedduring the process.

steam at 11 MPa has a specific volume of 0.0196 m^3/kg , find the temperature, the enthalpy, and the internal energy.

Find the internal energy and enthalpy for ammonia in a state where the temperature is -60°F and the pressure is 5.3 psig:

A 4 m3 cryogenic storage tank contains nitrogen at 110 K, with quality 25%. Saturatedvapor is now slowly withdrawn while some heat transfer takes place to a final state of110 K, x = 0.65. Find the mass withdrawn and the heat transfer.

For water at 100 kPa with a quality of 20%, find the volume fraction of vapor.

find the work posses for a carbon dioxide gas at 1958.76 C in kj/kg. use W=mRT