Heat of Combustion without moles? (1 Viewer)

[qwertywerido]

We have an assessment task in which the aim is to figure out the identities of four unknown alcohols. We are supposed to use 4 experiments to do so.
Teachers have recommended us to use the heat of combustion/change in enthalpy practical to do so. Only thing is, they aren't giving us the molar mass of the unknowns and hence, we cannot do the typical; -q/m calculations.
Does anyone have any ideas? Thinking of just measuring the mass loss compared to heat gain and comparing unknown to known alcohols? Somehow getting a trend line going on excel or something.

Thanks

 

[someth1ng]

I don't think it really matters. You could get heat of combustion for each alcohol in J/g. From there, you'd try to match it with the known values J/g.

There's no difference between J/g and J/mol – it's just a different measuring stick.