Compare the reaction for the "expansion" of methane with the reverse of the reaction that represents the standard enthalpy of formation. which properties are the same for both reactions and which are different?

What is the equilibrium constant of aa+bb=cc+dd

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst

A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?