SpudFiles

would anybody be able to tell me what temperature those gasmate 20% propane/ 80% butane burn at... or direct me to a site that will tell me....
...i need the temperature for my science assignment......any help would be appreciated

If we presume that that's 20:80 by mass, it's burning in air at constant pressure (normal flames), it's stoichiometric, and it's adiabatic...

gaseq, which uses equilibrium and thermodynamic calculations, gives us a flame temperature of ~2260K.