Determination of Density Essay

Purpose To determine the densities of aluminum and coat cylinders stringency is the relationship between the mass of an object and its ledger. Sometimes concentration nookie be easy to sense. If two objects come exactly the same underframe and size, the denser one may feel heavier. If their densities are close together, it can be hard to tell the difference. It gets really tough if you are dealing with materials that have very different sizes or very different shapes. The only modality to decide the density of an object is to cake its mass and its volume, then divide. Ex. slow-wittedness= potbelly/Volume ProcedureFor Aluminum1. Weigh the aluminum cylinders distributively on the analytical balance to the nearest 0.0001g and eternalise the weights 2. With a vernier scale measure, measure the diameter of each cylinder to the nearest 0.01cm and record 3. Again, exploitation the vernier caliper, measure the length of each cylinder to the nearest 0.01cm and record 4. Comput e the volume of each cylinder by using the conventionality V= (3.14d2h)/4 For Zinc1. Weigh the zinc cylinders individually on the top loading balance to the nearest 0.01g, and record the weights 2. Place large water in a 100mL graduated cylinder to cover the object. al-Quran the volume of water to the nearest 0.1mL by reading the bottom of the semilunar cartilage 3. Place the zinc cylinder in the graduated cylinder. Read the bare-ass volume and determine the volume for each piece of zincselective information compactness of Zinc spile1 104.0168gVolume1 18mLDensity1 5.7780g/cm3Mass2 92.8178gVolume2 15mLDensity2 6.1876g/cm3Mass3 72.2115gVolume3 10mLDensity3 7.2215g/cm3Mass4 55.3077gVolume4 9mLDensity4 6.1453g/cm3Mass5 35.2653gVolume5 7mLDensity5 5.0379g/cm3Average Density 6.079g/cm3Density of AluminumMass1 26.48gVolume1 6.28mLDensity1 4.22g/cm3Mass2 21.50gVolume2 5.01mLDensity2 4.30g/cm3Mass3 17.58gVolume3 4.14mLDensity3 4.25g/cm3Mass4 13.10gVolume4 2.92mLDensity4 4.48g/cm3Mass5 8 .68gVolume5 2.04mLDensity5 4.25g/cm3Diameter = 1.025cmAverage Density 4.29g/cm3ConclusionsThe densities of both objects were successfully determined. The average density of the aluminum cylinders was 4.29g/cm3, and the density of the zinc cylinders was 6.079g/cm3. Both of these values seem reasonable, and the zinc seems to be slightly heavier than the aluminum. The density of the zinc cylinders was found using the volume by displacement method, and the volume of the aluminum cylinders was found by the formula method V= (3.14d2h)/4. Problems with the equipment may have possibly introduced error into the measurements.The 100mL graduated cylinder used to square up the volume of the zinc cylinders was only marked in 10mL increments, requiring estimation for levels in between. The volume of the aluminum cylinders required the use of the vernier caliper to measure the diameter and the length of each cylinder. Improper use of the vernier caliper may have altered the measurements received for the aluminum cylinders. The error introduced by these problems was slight, however, and the calculated densities for both objects are probably quite reliable.