An ion-exchange process using a resin to remove copper ions from an aqueous solution is conducted in a 1.0-in.-diameter column 1.2 ft high. the flow rate is 1.5 gph and the break point occurred at 7.0 min. integrating the breakthrough curve gives a ratio of usable capacity to total capacity of 0.60. design a new tower that will be 3.0 ft high and operate at 4.5 gph. calculate the new tower size and break-point time. ans. tb

Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?

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.

Energy flows from the producer level to the level. is called