A troy pound is equal to 12 troy ounces and to 5,760 grains, that is exactly 373.241 7216 grams. Troy weights were used in England by jewellers. Apothecaries also used the troy pound and ounce, but added the drachms and scruples unit in the Apothecaries' system of weights.
Depends on the API gravity of the gasoline, which varies by grade and refinery. Usually, regular unleaded gasoline has a gravity of around 58 and a weight per gallon of 6.216 pounds per gallon. Premium gasoline may have a gravity of 54, or 6.350 pounds per gallon.
Water: The water vapour content of natural gas in the Union Gas system is less than 80 mg/m 3, and is typically 16 to 32 mg/m 3. Typical Combustion Properties of Natural Gas Note that there is no guarantee that the combustion properties at your location will be exactly as shown.