Plz help, I am confused .

If you mix chlorine lithium in nickel together which two elements would be the most reactive

6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm