True or False: You can break apart the atoms in a polyatomic ion.
True
False

Can someone explain to me how to do this problem ?

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.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?