Objective: Determine the specific heat capacity of brass using calorimetry, understanding the relationship between heat and temperature, and the concept of heat transfer, using the equation; Q=mc∆T. Also, to evaluate the collected data by comparing the experimental value with the accepted value using analytical capabilities. Method: • We heated a brass weight by immersing it in boiling water for a while to ensure that the temperature of the metal was the same as the temperature of the water. • We then inserted the brass weight into the calorimeter and took a series of readings of the temperature of the water inside to find the maximum temperature reached.• We found the value of the heat added to the cold water and inside the cup of the calorimeter by using our measurements and inserting it into the equation Q=mc∆T.• We also found the value of the heat taken from the brass weight, using the same equation. The specific heat of the brass weight was then calculated by manipulating the fact that the heat taken from the brass weight is equal to the negative value of the heat added to the 'cold water. We mostly followed the method outlined in the laboratory manual, with the following considerations to reduce systematic errors.• We ensured that the same scale was used for every weight measurement taken for the purposes of this experiment. This is to avoid systematic errors due to the possibility of slight discrepancies in the precision of the different scales.• We ensured that the person reading the thermometer avoided parallax and therefore systematic error by ensuring that his eyes were parallel to the level of the liquid at the internal. • We made sure there was a minimum volume of water transferred from the container containing the bo...... to the center of the paper ......or move the ice freezer to the table where our setup is located to reduce minimize the contact of the ice with the atmosphere and the ship carrying it, in order to minimize the quantity of melted ice. This would reduce the systematic error thereby decreasing the calculated value of Lf. Conclusion: Using calorimetry, our understanding of heat transfer, and the relationship between heat and temperature, we determined that the latent heat of melting of ice was 3.4105Jkg-1 ± 0.6105 kg-1. This value agrees with the accepted value and we were able to identify the possible root causes in the slight discrepancies such as random error and possibly systematic error due to the distance traveled between the freezer and the installation by comparing the percent deviation and the final percent uncertainty, and also critically evaluating our experiment method.
tags