I was doing a science lab and the first part had us combine 100mL of room temperature water with 100mL of hot water, then record the final temperature. Here's the data I got:
It asked us to find the heat capacity of the calorimeter, which is deduced using the following equation:
So after plugging in my data, I get that the heat capacity of the calorimeter is negative.
From what I understand this doesn't make sense since that would mean putting in more energy would lower the temperature. Did I do something wrong in my experiment or is this possible? The calorimeter was made out of styrofoam.