Compare And Contrast The Rate Of Diffusion And Calorimetry Lab Report

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Purpose: The purpose of this experiment was to identify what the unknown metal was by determining what the atomic mass was. To obtain the atomic mass of the unknown metal, the number of moles of H2 gas produced from the reaction was calculated. Introduction: This lab was an application of the kinetic- molecular theory of gases. According to this theory, it stated how gaseous particles are in a constant motion where they go at random speeds as well as directions.1 According to Thomas Graham, a Scottish chemist; he developed “Graham’s law”. This law explained the theory behind the rate of diffusion and the rate of effusion. Diffusion is when the rate of two gases mix, whereas effusion is the rate at which the gas escapes through a small hole…show more content…
For part A of the experiment, an unknown metal was obtained, along with a solution mixture containing 350 mL of distilled water and 150 mL of 0.3 M HCL. This solution was put into an 800/1000 mL beaker. It was then poured into a gas burette, and was filled all the way to the top to insure that no air bubbles would be present when inverted. Once the burette was inverted, it was then submerged into the 800/1000 mL beaker passed the surface. Once this step was accomplished, the unknown metal was sanded down until it was bright and had no black spots on its surface; the size of the metal was approximately 2 cm long and a 3 mm wide. The metal was then weighed on a balance; the balance was first zeroed and then the weight was measured. After noting down the weight of the metal, it was then folded two to three times in order for it to fit within the walls of the 3-inch test tube. Once this step was done, the tube was filled with distilled water, and was carefully submersed into the HCL solution. Observations were then taken during this period of the experiment until the unknown metal was completely reacted with the HCL solution. After this section of the experiment was completed, part B

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