This lab experiment required the quantities of specific heat transfer to be determined and the specific heat capacity of brass in a laboratory situation to be found. In part A, to determine heat exchange, 100 mL of cold water and 100 mL of hot water were measured using a graduated cylinder and each poured into a styrofoam cup where the temperatures of water were measured and recorded. The temperature of the cold water was measured to be 14℃± 0.5 and the temperature of hot water was 38℃± 0.5. The cold water was mixed with hot water and the final temperature was measured to be 26℃± 0.5. The final temperature of the mixed water was then calculated to be 26℃ ± 0.49. The percent difference between the measured and calculated final temperatures was found to be 0%. In part B, the …show more content…
A scale was used to measure the mass of the 100g brass object, the mass was recorded in table 2.
The brass object was placed in the beaker on the hot plate. The hot plate was turned on and the water was let come to a boil.
While waiting for the water to boil, 100 mL of cold tap water was measured using a graduated cylinder. The cold water was poured into a styrofoam cup its temperature was taken and recorded.
Once the water on the hot plate boiled, the thermometer was used to measure its temperature. The temperature of the brass was equal to the temperature of the boiled water. This was the initial temperature of the brass. The hot plate was turned off.
Using a pair of tongs, the brass object was removed from the boiling water and put in the styrofoam cup containing the cold water.
The temperature of the water surrounding the brass object was taken using a thermometer. The highest temperature reached was recorded.
Q =mcTand Qreleased + Qabsorbed = 0 were used to calculate the specific heat capacity of brass. This was the measured value for the specific heat capacity of