Calorimetric Analysis Lab

The objective of the lab was to determine the densities of known and unknown metal solids and liquids. For the liquids, initially, an Electronic Scale was placed onto Work Bench, and it was zeroed. An empty 50 mL Graduated Cylinder was placed onto the scale, weighing 54.00 grams. In increments of 10 mL. Until the volume was 30.00 Ml, 10.00 mL of water was poured into the Graduated Cylinder. In between each increase of 10.00 mL, the total volume and mass were recorded. For the known metals, the electronic scale was zeroed. An empty 50 mL Graduated Cylinder was placed on Electronic Scale. 30.00 mL of water was added to water in Graduated Cylinder. The total Volume of water in Graduated Cylinder is 30.00 mL, and the total mass of Water and Graduated Cylinder is 84.000 g. Increments of 5.000 grams of Iron was added into the Graduated Cylinder until 25.000 grams of Iron and the total volume of iron and water was recorded. …show more content…
The same procedures are followed for the unknown metal expect that the initial amount added into the Graduated Cylinder is 10.000 grams. Final results were determined mostly through the equation D(Density)=M(Mass)/V(Volume). The density of water, 1.000 g/mL, the density of ethanol, 0.7983 g/mL , and the density of the unknown liquid, 1.110 g/mL, was determined by dividing the total mass by the total volume. The densities of iron, ranged from 7.81 g/mL to 7.86 g/mL, the densities of aluminum, which was a standard 2.70 g/mL, and the densities of the unknown metal, a standard 7.14 g/mL, were calculated by dividing the total mass of the metal over the net volume of the given metal. To calculate the net volume of the metals, the equation, v_2-v_1=v, was used. v_2 is the volume amount of the water and the metal. v_1 is the initial volume of the water. V is the metal net