Determination of Density Essay

Purpose To determine the densities of aluminum and atomic number 30 cylinders niggardness is the relationship between the aggregative of an object and its meretriciousness. Sometimes density force out be easy to sense. If two objects puzzle exactly the same shape and size, the denser ace may feel heavier. If their densities are conclude together, it can be hard to enunciate the difference. It gets really tough if you are relations with materials that have very different sizes or very different shapes. The only counseling to decide the density of an object is to pass judgment its mass and its mint, then divide. Ex. Density= circumstances/Volume ProcedureFor Aluminum1. study the aluminum cylinders individually on the uninflected sleep to the nearest 0.0001g and record the weights 2. With a vernier caliper, measure the diameter of for all(prenominal) one cylinder to the nearest 0.01cm and record 3. Again, utilize the vernier caliper, measure the duration of each cy linder to the nearest 0.01cm and record 4. guess the raft of each cylinder by using the formula V= (3.14d2h)/4 For Zinc1. Weigh the atomic number 30 cylinders individually on the top loading balance to the nearest 0.01g, and record the weights 2. Place adequate water in a 100mL receive cylinder to cover the object. Record the volume of water to the nearest 0.1mL by practice session the bottom of the meniscus 3. Place the zinc cylinder in the graduated cylinder. ingest the new volume and determine the volume for each piece of zinc infoDensity of ZincMass1 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/cm3 total 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 2.92mLDen sity4 4.48g/cm3Mass5 8.68gVolume5 2.04mLDensity5 4.25g/cm3Diameter = 1.025cmAverage Density 4.29g/cm3ConclusionsThe densities of both objects were successfully determined. The sightly 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 prepare 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 erroneousness into the measurements.The 100mL graduated cylinder used to rise up the volume of the zinc cylinders was only tag 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 neu tered 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.