Metamucil is a brand name for psyllium. It is a bulk forming laxative that can be found in over-the-counter and veterinarian prescription... Metamucil Dosage for Cats; At-Home Cat Hair Ball Relief; Cats & Psyllium; Comments You May Also Like.
The sign of the heat of formation matters. Using hess's law: 2(-238kJ) + 4(242kJ) + 2(393)= -1279=Heat of reaction Heat of combustion of methanol is just the heat of reaction divided by the molar coefficient for methanol in the chemical equation so about -639.5kJ/mol. In acuality it is somewhere near -727kJ/mol.
When properly combusted, propane produces about 50 MJ/kg of heat. The gross heat of combustion of one normal cubic meter of propane is around 91 megajoules. Propane combustion is much cleaner than gasoline combustion, though not as clean as natural gas combustion.