In this lab, Lab 4.3 Comparing Concentrations of Saturated Solutions, we decided to find and compare the solubilities of two solids in water. Additionally, we tested whether solubility is a characteristic property of a solid in a given liquid. This laboratory allowed us to test and use a reliable method to measure the solubility of a solid. This lab can be reproduced for any solid with the same procedure, thus giving us a method to calculate solubility. The two solids we tested in this experiment were NaCl (sodium chloride) and NaNO3 (sodium nitrate). To begin the experiment, we measured 5 cc of water and 5 g of NaCl and added them to a test tube. Then we capped the test tube and shook it vigorously for two or three minutes. After observing that the solution was saturated, we massaged an evaporation dish (18.89 g) and poured most of the solution into it, while being careful not to pour any undissolved solid into the dish. Then we massaged the evaporating dish with the solution and found it to contain 23.32 g. The next step was to slowly evaporate the solution in the evaporating dish using a hot plate. Once the liquid evaporated from the solution, to the best of our ability, we massaged the remaining solid into the dish, which we found to be 20.32 g. This was the last step in the physics part of the experiment, and we proceeded with the calculations. First, we found the mass of the remaining solid by subtracting the mass of the evaporating dish from the mass of the solid and the evaporating dish, which we found to be 1.43 g. To find the mass of the water evaporated, we subtracted the mass of the solid and the evaporating dish from the mass of the solution and the evaporating dish, which we found to be 3 g. Because the density of water is 1 g/1 cc, the mass is the ...... middle of paper ......, the dissolved substance, in a given solvent, the dissolving substance. Solubility is a characteristic property of a given solid in a given liquid, and when the solubility of a solid is achieved, the solution is considered saturated. A saturated solution is one in which the maximum amount of solute has been dissolved in the solvent and no more solute can dissolve. Additionally, in Lab 4.1, we gradually added solid until the solution was saturated and noted when it was saturated, but we did not find the solubility of the solid. Unlike Lab 4.1, in Lab 4.3 we started with a saturated solution and then removed the water, giving us the maximum amount of solid per volume of liquid, otherwise known as solubility of the solid. In conclusion, Lab 4.3 allowed us to find the precise solubility of two solids and gave us a method to find the solubility of a solid..