Avogadro’s law states that
equal numbers of moles of gases at the same conditions occupy equal volumes, regardless of the identity of the gases
at constant pressure, gas volume is directly proportional to absolute temperature
the volume of a gas is inversely proportional to its amount in moles
at constant temperature, gas volume is inversely proportional to pressure

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.

i think its 100

i hope this !