If you purchase four 750 gram jars of table salt (nacl) and dump them all onto 1,000 kg of snow, how much would the freezing point be lowered after all of the salt has dissolved?

- lead + phosphoric acid = hydrogen + lead(ii) phosphate

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.