Smoke is a mixture of solid, liquid, and gas particles. Although the solid particles make the smoke visible, most of the smoke mixture is gas. A picture of smoke coming out of a nozzle. Which visible quality of smoke shows that it contains a lot of gas influencing the other particles?

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.