22-Proc-Density

22-Proc-Density - 3.0 Procedure for Determining Density of...

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3.0 Procedure for Determining Density of Solid, Liquid, Gas 22 Rev 1/21/2010 Part 3.1 Density of Regular Shaped Object (Brass Rod) 1. Use a centimeter scale ruler and “Laboratory Significant Figure Measuring Rules” to measure length and diameter of a brass rod and record measurements on Data Sheet. 2. Use analytical balance to determine the mass of the brass rod and record measurement to four places right of the decimal on the Data Sheet. 3. Determine the number of significant figures that will be in your final density calculation and record in sig/fig circle. 4. Calculate the density of the brass rod (grams per cm 3 ) 5. Convert the density of the brass rod (kilograms per decimeter 3 ) 6. Look-up density of “360” brass in an appropriate source and record density on Data Sheet. Part 3.2 Density of Irregular Solid Shaped Object (Steel Bolt) 1. Obtain a steel bolt to be used as an irregular shaped object. 2. Determine the mass of the bolt to four places right of the decimal with analytical balance and record on Data Sheet. 3. Obtain a clean and dry 50.00 ml volumetric flask with ground glass stopper. 4. Fill the flask completely with de-ionized water excluding all air from the flask. . Note: Do not fill flask and stop at etch mark but fill completely with water. 5. Completely dry flask and stopper with tissues. 6. Determine mass of the flask, stopper, and water to four places to the right of the decimal using an analytical balance and record on Data Sheet. 7. Remove stopper from flask and gently slide bolt into flask. 8. Add de-ionized water to the flask and insert the stopper. Again excluding all air. 9. Completely dry flask and stopper with tissues. 10. Determine the mass of the flask, stopper, water, and bolt to four places to the right of the decimal using an analytical balance and record on Data Sheet. 11. Remove stopper from the flask and measure the temperature of the water in the flask and record on Data Sheet. 12. Using the “Orange Sheets”, find density of water at temperature and record on Data Sheet. Part 3.3 Density of a Liquid (Sucrose and Water) 1. Obtain a clean and dry 50.00 ml volumetric flask and 5 to 8 grams of sucrose . 2. Determine the mass of the clean dry flask and stopper and record on the Data Sheet. 3.
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This note was uploaded on 07/28/2011 for the course CHM 2045 taught by Professor Eng during the Spring '10 term at UNF.

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22-Proc-Density - 3.0 Procedure for Determining Density of...

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