What is the enthalpy of combustion, per mole, of butane?

If a reactant was removed, did the new equilibrium system shift to make more reactants or more products?

The boiling point of liquids is very high what does it indicate

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?