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All That Glitters Lab Report

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In the lab “All That Glitters” the objective that was focused on during the lab was calculating the density, volume and mass of various substances. The method that was used in finding the volume of the samples is called the displacement method. This is a process where the volume of the water in the graduated cylinder is calculated before and after the sample is placed. In this lab, the goal of the experiment was to identify and come to consensus about what the unknown substance might be. For this experiment, the required materials were ten pre and post pennies, unknown sample, graduated cylinder, weigh boat, water, paper towels and a weighing scale. To start off, dry the pre pennies, post pennies and the unknown substance completely with paper …show more content…

In addition, for calculating the mass of the pennies and the unknown substance, zero the balance and place it in the weigh boat to receive the data. Lastly, to calculate the density of the substances, use the formula D=MV, in which dividing the mass by the volume allows to do so. In order to be certain of the data that is collected, running multiple trials could help be accurate. A method to get an average value of the density can be expressed by the formula D1+D22. This formula basically allows one to add the data of all the trials and divide it by the number of trials that was performed. This method, not only allows to calculate the average, but also assures that the data is close to the actual value. After these sets of procedures were conducted, the unknown metal sample was identified. The unknown substance had an average density of 7.64 g/ml, which was close to the density of Tin with 7.3 g/ml as its density. The possible explanation for the differences in their values can be due to experimental errors. One of the main experimental errors that contribute to this would be, that the pennies might not be completely

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