C3H8+5O2--> 5 O2 --> CO2+ 4 H20 you react 15.00 liters pf gaseous propane (C3H8) with air how many molecules of Gaseous Carbon dioxide will you produce

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.

yes the answer is total mass in unchanged   : )