The gravitational pull of the moon has the greatest influence on the water levels of earth’s ocean tides. if the distance between the moon and earth were to decrease steadily for one week, which water-level changes would be expected to occur?

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.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements