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Density Report

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Density Report
Density Lab Report
PURPOSE:
a. To measure the masses and volumes of solids and liquids b. To calculate the densities of solids and liquids c. To calculate the specific gravities of solids and liquids d. To calculate the volume of a rectangular object and to express the volume in volume metric units e. To record data and calculate the values in the correct number of significant figures
MATERIALS:
10 mL graduate balance test tube rack unknown liquid
50 mL graduate test tube 100 mL beaker assorted solid objects
Dropper pipette meter stick

PROCEDURE:

Part A. Density of Water 1. Measure the mass of a 100 mL beaker to the nearest .01 g. The beaker should be dry. 2. Measure, as accurately as possible, 50.0 mL of water. Use the graduated cylinder (the bottom of the meniscus must be on the 50 mL mark. You may want to use the dropping pipette to add the last few drops of water to get exactly 50.0 mL). Add this measured volume of water to the 100 mL beaker. 3. Measure the mass of the beaker and the water. Record all measured values in the data chart for Part A of the observation section of your lab report.

All of the data charts should have two columns, one for the item measured and one for the value. The data chart for Part A should contain the following information: (*refers to calculated or theoretical values) A. Mass of the empty beaker D. *Mass of the water G. *Percent Error B. Volume of the water E. *Density of water (experimental) C. Mass of the beaker and water F. *Density of water (theoretical)
Part B. Density of an Unknown Liquid 1. Measure the mass of a 10 mL graduated cylinder. 2. Fill the graduated cylinder close to the 9 mL mark with the unknown liquid. Read the volume to the nearest 0.1 mL or 0.2 mL according to the precision of the graduate. 3. Measure the mass of the cylinder and its contents carefully. Record all measured values in the

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