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Density experiment - Lab Report Example

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This experiment aims at using the Archimedes principle to determine the density of post-1985 pennies. The experiment used water determined corresponding masses and volumes of pieces of pennies. This was then used to determine the pennies’ average density…
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Density experiment
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This experiment aims at using the Archimedes principle to determine the density of post-1985 pennies. The experiment used water determined corresponding masses and volumes of pieces of pennies. This was then used to determine the pennies’ average density. The results yielded a significant relationship between mass and volume at ‘0.05 level of significance’ and a corresponding p value of 0.0009. The results also identified an experimental density of 7.54 g/mL for the pennies. This was different from a theoretical density of the pennies that is 7.18 g/mL. The experiment therefore yielded a percentage error of 5 percent that can be attributed to inaccurate measurements.Density is an intensive property of matter and is defined in terms of mass and volume of a substance. It is the mass of a substance per unit volume. Archimedes’ approach is one of the applicable techniques for determining density of a substance. Under the method, displacement of water is used to obtain volume of the subject material whose density is to be determined while a mass balance is used to determine the material’s mass. The material should however be insoluble in the applied liquid, water. Displacement that defines the immersed substance’s volume is calculated from the difference between the final volume of water after immersion and the volume before immersion. The mass is similarly determined by the difference between the masses after and before immersion (Boyd, 2012; Roessle, n.d.). Read More
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