How many electrons pass through the cross-sectional area in 10.0s?

physics book

What statements accurately describe atoms

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.

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.