Given the equation c3h଼ + → + and that the enthalpies of formation for = −241.8 kj/mol, = −393.5 kj/mol, and the enthalpy of combustion for the reaction is −2220.1 kj/mol, what is the heat of formation for propane?

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.