! Required information A piston-cylinder device contains 0.66 kg of steam at 300°C and 0.5 MPa. Steam is cooled at constant pressure until one-half of the mass condenses. Use data from the steam tables. Determine the volume change. (Round the final answer to three decimal places.)

A typical adult breathes 0.5 L of air with each breath and has 25 breaths/min. At 101.325 kPaa and 22 C, determine the mass of air per hour entering a person’s lungs [3 decimal places]. This person now is skiing on a mountain where the air is – 10 C and the pressure is 89 kPaa. How many breaths per minute are required if the mass of the air per hour entering the lungs is to be constant? For air, R = 0.287 08 kJ/kg-K and k = 1.4.

! Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Consider helium at 350 K and 0.75 m³/kg. Use dP = ()¸dT + (P),dv for calculations. The gas constant of helium is R= 2.0769 kPa-m³ /kg.K. Determine the change in pressure corresponding to an increase of 4 percent in specific volume at constant temperature. (You must provide an answer before moving on to the next part.) The change in pressure corresponding to an increase of 4 percent in specific volume at constant temperature is - kPa.

QUESTION 16 THERMODYNAMICS A mass of 5 kg of saturated water vapour at 300 kPa is heated at constant pressure until the temperature reaches 200 °C. Calculate the work done (in kJ) by the steam during this process. Enter your answer to the nearest whole number. Do not include units or +/- signs with your answer. QUESTION 17 FLUID MECHANICS The Darcy - Weisbach equation, shown below in two forms, states that the dissipation of mechanical energy by fluid friction results in a reduction in magnitude of what quantity in the direction of the flow? Ap* 4fF pu² L d 2 4fpu² d 2g O pressure O dynamic pressure O stagnation pressure O velocity O piezometric pressure =