Air at 80 kpa, 27 degrees c and 220 m/s eneters a diffuser at a rate of 2.5 kg/s and leaves at 42 degrees c. the exit area of the diffuser is 400 cm2. the air is estimated to lose heat at a rate of 18 kj/s during this process.
determine
a. the exit velocity.
b. the exit pressure of the air.

Explain what happens at the saturation point when adding salt to water at room temperature.

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.

What component of earth’s atmosphere exists entirely as a result of photosynthesis?