Rather shameless request for AP chem help

<p>Okay, so, I got snagged writing up a lab. I've got two different reactants with two different initial temperatures, and a list of temperatures when they undergo an exothermic reaction in different mole-to-mole ratios. I need to find the change in temperature for each ratio, but how would you correct for the discrepancy between the two initial temperatures? Any help would be appreciated :)</p>