1. Add 150.0 mL of tap water to your 250-mL beaker from Part C. Record the total mass and "weigh by difference." Use the mass of the full beaker and the mass of the empty beaker to find the mass of 150.0 mL of water. Use this data and the 150.0 mL to calculate the density of water. 2. Different instructors may use various "irregularly shaped objects." He or she will give you instructions for identifying and measuring your object. Take the mass and volume (using graduated cylinder) necessary to determine the density of your object. Part E: (Measuring) Temperature a. Record the room's temperature to one fifth of one degree (0.2 degrees) using the Celsius and Fahrenheit scales of a dual temperature thermometer. b. Fill your 250-mL beaker with ice. Add about 4/5th tap water and stir to create an "ice bath" whose Celsius and Fahrenheit temperatures are to be recorded. Also to the 0.2 of a degree. Be sure your thermometer is in the center of the ice bath and not touching the sides or bottom of the beaker. emur -400 Reading the Meniscus at Eye Level 70 .20 60 80 eye