So I recently got into an web posting discussion that ended up amusing me. Someone posted a question about converting Btu/SCF to Btu/lb. There were several responses all taking a very laborious approach of getting density information, etc. The true answer is quite simple for those of us in the gas business.
We know that there are 379.5 SCF/lbmole. So that is step one, converting Btu/SCF to Btu/lbmole. Then with the mole wt (lb/lb mole) we can simply convert to the final form of Btu/lb.