What does the law of conservation of energy state about energy in a closed system? energy cannot be created or destroyed. energy can be created but not destroyed. energy can be destroyed but not created. energy can be either destroyed or created.

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.

Which is the most accurate name for the ionic compound cas?

See the attachment and solve question 5th