Assume you are performing the calibration step of experiment 8 and you begin with 30 g of water at 20 oc and 30 g of water at 80 oc. After adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment, you determine the temperature of the mixed portions of water to be 45 oc. What is the heat capacity of the calorimeter?.

A calorimeter is a device used in calorimetry, a procedure for calculating heat capacity and trying to measure the heat of chemical reactions or even other physical changes. Among the most popular kinds are dsc calorimeters, isothermal micro calorimeters, titrimetric calorimeters, and accelerated rate calorimeters. A straightforward calorimeter is just a metal container with a thermometer suspended beyond a combustion chamber. It's one of the measurement tools used in the research of chemistry, biochemistry, and thermodynamics. The two substances A and B are separately added to a calorimeter, and the original and final temperatures are recorded, in order to determine the enthalpy change per mole of substance A in a reaction between those two substances.

We know:

mw Cw Ow = mc Cc delOc + Ccal delc

80g * 4.18/gc * (80-45)C = 80g * 4.18J/g * (45-20) + Ccal *(45-20)

= 11704J = 8360 + Ccal (25)

= 133.76 j/c

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