1. The problem statement, all variables and given/known data Determine the specific heat of the unknown metal in the trial. This is for a lab, when we put a 167.10 g piece of an unknown metal into a Styrofoam cup that had 107.93g of water in it. Recorded the temperature of the water every 30 seconds until it was the same for two trials in a row. The original temperature of the water was 23°C. (The purpose was to find what element the metal is) Here is the table of our data. We did two other trials but in both something went horribly wrong. seconds - °C 0 - 23.0 30 - 23.9 60 - 25.4 90 - 25.8 120 - 25.8 2. Relevant equations Q=MCΔT 3. The attempt at a solution ΔT = 25.8°C - 23.0°C = 2.80°C This equation is finding the specific heat of water... I think... Q = (107.93 g)(4.184 J/g°C)(2.80°C) = 1260 J Now, to find the unknown metal... (our teacher says the possibilities are lead, copper, iron, aluminum, zinc) 1260 J = (167.10g)(x J/g°C)(2.80°C) 1260 J / (167.10g)(2.80°C) = x J/g°C x J/g°C = 2.69 J/g°C If I did everything right... 2.69 J/g°C SHOULD be the specific heat value of the unknown metal (since the energy lost by the water is the energy gained by the metal, and vice versa). But none of the values on the PT for heat capacity are 2.69J/g°C. Did I do something wrong in my calculations, am I interpreting my result wrong, or is there something really bad with my data? I'm starting to think its the latter... This might help... Specific Heat table All answers & help are appreciated.. This is due tomorrow and I'm completely stumped.