What is the molar mass of a lighter?

Question

Is it PV=nRT because if it is how do you convert moles to molar mass??????????

Answer 1

Butane is the gas
C4H10
molar mass = 58.0 g/mol
this is what is should be but did you do a lab on this.
If so
Molar mass = grams/moles

where the moles is the n in your PV=nRT
the weight of the lighter before and after will give you the mass of the butane.