Determine the specific enthalpy of water at 5 MPa and  20c

A mixture with 70% quality at 500 kPa is heated isothermally until its pressure is 300 kPa. Show the applicable steam table used. Find the heat added during the process. Plot the T-s & P-V diagram of the problem

The pressure change during a particular reversible process is given by T = AP2 where A is a constant. A monatomic ideal gas is taken through this process from a temperature of 4T0 to 16T0. The sample of gas consists of n moles. (Hint: You must express the pressure in terms of volume using the equation for the process and the ideal gas law.) Compute the work done by the gas in terms of n, R, and T0 (and appropriate numerical constants) only. Compute the change in heat for the gas in terms of n, R, and T0 (and appropriate numerical constants) only. Compute the change in entropy for the gas in terms of n, R, and T0 (and appropriate numerical constants) only.

Problem 1: A piston-cylinder device contains 0.1 m' of liquid water and 0.9 m³ of water vapor in equilibrium at 800 kPa. Heat is transferred at constant pressure until the temperature reaches 350°C. (a) What is the initial temperature of the water? (b) Determine the total mass of the water. (c) Calculate the final volume. (d) Show the process on a P-v diagram with H,O P = 800 kPa respect to saturation lines.