Lab 02 Procedure

# Lab 02 Procedure - a Obtain 5 10 15 and 20 NaCl by weight b...

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Adam Golman Lab 2 Density Section 22 Procedure 1. Calibration of the Graduated Cylinder a. Weigh a 10 mL graduated cylinder to the 0.01 gram and record b. Fill the graduated cylinder with exactly 10 mL c. Dry the outside and weigh the filled cylinder d. Determine the volume of the graduated cylinder by using the density of water e. Empty the cylinder and repeat. f. Average the two volumes 2. Determine the Density of An Unknown Metal a. Obtain an unknown and record its number b. Clean and dry the metal c. Place the metal in the cylinder and weight it to the 0.01 gram d. Now add water to 10mL e. Weigh again to 0.01 gram f. Clean, dry, and return the sample g. Determine the density of the metal and record h. Use the table to identify it. 3. Determination of Salt Solutions

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Unformatted text preview: a. Obtain 5%, 10%, 15% and 20% NaCl by weight b. Clean and dry the graduated cylinder c. Fill the cylinder to 10 mL with 5% NaCl d. Weigh the cylinder and solution to 0.01 gram e. Record f. Repeat steps b-e for 10%, 15%, 20% solutions Adam Golman Lab 2 Density Section 22 g. Determine the Density of each of the solutions h. Construct a graph of Density vs Composition. Include water i. Obtain an unknown from the TA j. Using a 25 mL flask obtain the unknown from the storeroom k. Record the unknown number on the data sheet. l. Repeat steps b-e for the unknown. m. Determine the density of the unknown. n. Using the graph determine the % composition of your unknown and record your results Hazards : None, no special clean up...
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## This note was uploaded on 05/14/2008 for the course CHEM 103 taught by Professor Kramer during the Spring '08 term at University of Delaware.

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Lab 02 Procedure - a Obtain 5 10 15 and 20 NaCl by weight b...

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