Density Lab Report

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Experiment 1 Density by Lindsey Loerzel Chem 112L-S10---Machelle Martinez September 9th, 2014 Reed B The volume delivery accuracy and precision of different forms of glassware were found by volumetric measurements and density of a metal was determined by testing the mass of water in different glassware and calculating the volume, which was compared to the known. The density of the metal was found by volume displacement. The known volume of one gram of air saturated water at 25 degrees C is 1.002968cc. The known density is 1.002968 g/ml. The volume of water in a 50ml beaker was found to be 24.77ml+- 1.16, the volume of water in a 25ml graduated cylinder was found to be 24.39ml+- 0.26, and the volume of water in a 25ml pipette was found to be 14.96ml+- 0.23. It was found that the density of the metal bronze was 8.761 g/cc +- 0.082 compared to the known value of 8.86 g/cc. BACKGROUND: Density is the mass per unit of volume1. Density can be measured by dividing you mass by your volume. Density is very important. It can be used as a form of identification, just knowing the density of something could tell you what it is. Density can also be used to figure out how pure something is. Since substance such as gold has a specific density at its pure state, you can determine if something is pure. Any method of quantitative…show more content…
The known density of bronze is 8.86 g/cc. In comparison to the uncertainty bounds, it does not fall within the bounds, but is extremely close. The one factor that could cause the density of water used to determine the metal density to differ from 0.997041 g/ml would be the temperature. The density of water changes with the state. The density of ice is different than the density of room temperature water, so if the temperature were to change, so would the

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