Name: Alejandro Urite Pre-laboratory Assignment: You must show your work in order to receive credit. 1. A wooden square block is placed on an analytical balance giving a mass of 5.1977 g. The square block has dimensions of 2.00 cm long, 2.00 cm wide, and has a height of 2.00 cm. Calculate the density of the wooden square block in units of g/cm3 to the correct number of significant figures. . mass : 5. 19779 . Dimensions= 2.00 cmx 2:60(m x 2.00 cm . Volume = 2.00 x 2.00 X 2.00 = 8.00 (m 0 - 5 . 19lig = 0.649 7125 9/ (m 3 8.00 cm 3 10 . 650 g/ cm 3 2. A marble ball is placed on an analytical balance giving a mass of 12.5640 g. This marble ball is placed in a graduated cylinder containing 40.0 mL of water. The marble ball displaces the water to a reading of 44.5 mL. Calculate the density of the marble ball in g/cm3 to the correct number of significant figures. (1 ml = 1 cm3) 3. An Erlenmeyer flask is placed on an analytical balance giving a reading of 124.2218 g. Exactly 25.00 mL of tap water was placed into an Erlenmeyer flask using a volumetric pipette. The Erlenmeyer flask with the tap water is now placed on the same analytical balance giving a second reading of 149.7450 g. Calculate the density of the tap water in g/ml to the correct number of significant figures