20 g 20 g
In the diagram above, Block A and Block B have the same volume. Block D has a greater volume than Block C. The mass for each Block is shown.
Imagine that Blocks C and D are made of the same pure substance. How would you expect the particles of that substance to compare?
hp

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

i think it's c. i'm not sure but i think so.

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.