Part A: Density of Water (guess a number and based on that find the density of the water) 1. Measure the mass of a 50 mL beaker using a balance and record your data table. This is the mass of your beaker 2. Add distilled water to a 50 mL graduated cylinder (about half full) and read your volume to the nearest 0.1 mL. Record the volume in your data table. Estimate the last digit of your measurements! 3. Pour the distilled water into the beaker and measure the new mass on the same balanced that you used before. 4. Place the beaker with water in it on the balance. Measure the final mass of the beaker plus water and record. Dispose of the water down the drain. Part B: Density of an Unknown Liquid (guess a number and based on that find the density of the unknown) 1. Measure the mass of a 50 mL beaker and record. 2. fill your beaker with a known volume of unknown liquid. 3. Measure the mass of the beaker with liquid inside. Record this mass as the ending mass.