Assuming ideal behavior, how many moles of helium gas are in a sample that has a volume of 8.12 L at a temperature of 0.00ºC and a pressure of 1.20 atm?

That result from subduction of oceanic plates beneath lighter continental plates. most of the earth's volcanoes are located around the pacific ring of fire because that the location of most of the earth's subduction zones.

Most likely a is the answer - because  you generate   38 atp's but also consume an atp.   each atp gives approx. less than 4 kcal so probably a is the closest answer.