Yog Natural Gas Heavier or Lighter than Air

Cov pa roj, Feem ntau muaj methane nrog ib qho hnyav molecular ntawm 16, yog sib dua li huab cua, uas muaj qhov hnyav molecular ntawm kwv yees li 29 vim nws cov ntsiab lus tseem ceeb ntawm nitrogen thiab oxygen. Qhov sib txawv ntawm qhov hnyav molecular no ua rau cov roj ntuj tsawg dua thiab ua rau nws nce siab hauv ib puag ncig atmospheric.