Asample of ideal gas is in a sealed container. the pressure of the gas is 705 torr , and the temperature is 19 ∘c . if the temperature changes to 62 ∘c with no change in volume or amount of gas, what is the new pressure, p2, of the gas inside the container?

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

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.