What color would a phenolphthalein solution be at ph=5

Define conservation of energy in your own words be as specific as you can

What is the conversion factor between kg/m^3 and g/m^3. express your experimental values for the densities in kg/m^3.

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.