Kev tawg yog xav tau, contingent raws li kev ua tiav ntawm cov txheej txheem tawg tshwj xeeb.
Rau hydrogen ignite explosively, nws cov concentration yuav tsum nyob rau hauv ib qho chaw tawg, xws li los ntawm 4.0% rau 75.6% los ntawm ntim. Ntxiv mus, Kev sib sau ua ke ntawm cov cua sov hauv qhov chaw kaw yog qhov tseem ceeb rau qhov tawg.