To properly answer this you would need the specific gravity of the natural gas. As gas sg varries from location, quality and other variables. A complete and accurate answer is somewhat problematic. Here is the generic answer with a generic weight for NG being .60 to .70, or for this excersise .65... air of corse being 1. If air = 1.2 ounces per cf and air = A = 1 and Natural Gas = NG = .65 then 1 cubic foot of NG would weigh 65% that of a cubic foot of air or .78 ounces per cf. CAUTION: this is not a specific answer as your question left too many variables. It will probably be sufficent for your average 5th grade teacher though. Hope this helps Terry
Ther are 1,050 BTU in one cubic foot of natural gas.
Methane has a density of 0.000667151 grams per cubic centimeter. This means there are 18.9 grams present, or 0.0416674 pounds.
1 standard cubic foot of natural gas gives about 1030 BTU
It is how you measure gas volumes: "scf"= standard cubic foot of gas.
For one cubic foot of natural gas: 1ft³ = 1031BTU 1ft³ = 1.08 Megajoules
9.54
1 cubic foot = 7.48 US gallons
A standard cubic foot of natural gas has 1000 BTU. A Barrel of Oil equivalent has 5800000 BTU. It is 0.000172 BBL per cufic foot of gas.
1000
Gas is typically measured in cubic feet or cubic meters at a particular temperature and pressure and will depend on the composition of the gas. So, as asked, there is no answer. I have rephrased your question: What is the expected weight of natural gas at standard condition in a one US gallon container? Answer: 0.00588 to 0.007487 pounds Standard conditions are pressure = 14.7 psia and temperature = 60 degrees F. At these conditions, natural gas gravity = 0.7 to 0.9 kg/m3 at standard conditions, depending on composition. See first link. This is equal to 0.044 to 0.056 pounds per cubic feet. There are 7.48 gallons in a cubic foot, so: 0.044 pound/cubic feet *(1 cubic foot/7.48 gallons) = 0.00588 pounds 0.56 /7.48 = 0.007887 pounds see links
Approx 1000 BTU per standard cubic foot
According to U.S. EPA, Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2004, 1 therm of natural gas burnt produces 11.7 lbs. of carbon dioxide emissions. Therefore, the Carbon Coefficient for natural gas is: 117 pounds of CO2 per million BTU, or 0.12 pounds per cubic foot of gas.