1. Natural gas, a widely used energy source, is typically measured in cubic meters (m3) or liters (L).2. To convert the volume of natural gas from cubic meters to a mass unit of kilograms, one must know the density of the gas.3. Natural gas is primarily composed of methane (CH?), which has a molar mass of 16 grams per mole.4. The standard molar volume is 22.4 liters per mole, representing the volume of one mole of gas under standard temperature and pressure.5. Thus, 1 cubic meter of natural gas contains 1000 liters.6. Dividing 1000 liters by 22.4 liters per mole yields the number of moles.7. Multiplying the number of moles by the molar mass of methane (16 grams per mole) gives the mass of the natural gas in grams.8. Converting grams to kilograms, as 1 kilogram equals 1000 grams, results in the mass of natural gas in kilograms.9. Therefore, 1 cubic meter of natural gas weighs approximately 0.71 kilograms.10. Note that this calculation assumes the natural gas is pure methane; in reality, the density of natural gas may vary due to the types and proportions of impurities present.