Are we alone in the universe? Brainliest to favorite answer

possibly

Explanation:

possibly not?

nah probably not I mean if the universe created us then they probably created other species that we don't know of mainly because they are probably doing a better job working together and surviving because we have let the world down so.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.