Methane may one day be used as an alternative to gasoline in some vehicles. It has been determined that one needs 140 ft3 of methane gas at 55°F and 1atm to move a car the same distance as 1 gallon of gasoline will. Assume a car has a 14-gallon gas tank. If the methane were isothermally compressed to 3000 psia, Determine the volume of methane (gallons) required to move the car the same distance it would go by using a full tank of gasoline.

10 years is the answer

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.