How can you determine if a circuit is a series circuit or a parallel circuit?

In a parallel circuit, all components are connected across each other, forming exactly two sets of electrically common points.

Explanation:

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.