AYUDA PLISS (`pongo corona)
-Propone un modelo atómico que represente el átomo de aluminio y establece cual es el nº atómico, el nº másico, cantidad de p+, e- y nº y la configuración electrónica.

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.

the maximum mass of nh3 is nh3 in grams