8.The Group i metals are highly reactive because A. the lone electron in their valance shells is easily lost B. they already have eight electrons in their valence shells C. they are far away from the non-metals on the periodic table D. they can easily add electrons to fill their valence shells

The metric unit of electrical power is the watt volt ampere ohm

How have the competing explanations' experiments on atoms affected the development of the atomic model?

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.