The mass is 132.0384 grams.
Salt, silt, and clay particles
Methane is CH4
Ethane is. C2H6
Method by ☆cracking alkanes☆
In this case, by cracking methane
Cracking alkanes is the method used to split a long alkane structure into smaller alkanes using high temperature and a catalyst.
e.g. C2H6 -> CH4 + CH2
Those are your answer i don’t know what 6 is though sorry. Have a good day