Method development 25-27.

(a) explain how to measure k and resolution.

(b) state three methods for measuring im in reversed-phase chroma- tography

(c) state three methods for measuring om in hydrophilic interaction liquid chromatography.

(d) estimate tm for a 15 x 0.46 cm column containing 5-um parti- cles operating at a flow rate of 1.5 ml/min.

estimate tm if the par- ticle size were 3.5 um instead.

Aheat pump using refrigerant-134a heats a house by using underground water at 8°c as the heat source. the house is losing heat at a rate of 60,000 kj/h. the refrigerant enters the compressor at 280 kpa and 0°c, and it leaves at 1 mpa and 60°c. the refrigerant exits the condenser at 30°c. determine: (a) the power input to the heat pump, (b) the rate of heat absorption from the water, and (c) the increase in electric power input if an electric resistance heater is used instead of a heat pump