Outline lab 1 - 4. Weigh a clean dry 50 mL Erlenmeyer flask...

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Outline Basic Laboratory Techniques 1. Measure the length and width of the lab manual in both centimeters and inches using the meter stick. Use the measurements to calculate conversion in cm/in. 2. Fill the large test tube to the top with water. Pour the water into a graduated cylinder and measure the volume of the water to the nearest 0.1mL. 3. Put 50 mL of ice into a 250 mL beaker. Cover the ice with distilled water. Let sit for 15 minutes and measure the temperature to the nearest 0.1o C. Take another 250 mL beaker fill it half full of distilled water and place it on a hot plate. Heat the water to boiling and measure the temperature to the nearest 0.1o C. Using the barometric pressure given by the instructor and the equation in the text, correct the boiling point to atmospheric pressure.
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Unformatted text preview: 4. Weigh a clean dry 50 mL Erlenmeyer flask on the balance. Fill a beaker with distilled water and measure the temperature of the water with the thermometer. Using a 10 mL pipet, take 10 mL of water from the beaker and add it to the flask. Reweigh the flask. Using the difference in the two masses calculate the mass of the 10 mL. Using the density of the water from the table in the lab manual calculate the volume of the water. This is the calibrated volume of the flask 5. Weigh a clean dry 50 mL beaker. Add 10 mL of antifreeze to the beaker. Reweigh the flask. Calculate the mass of the 10 mL by using the difference in mass. Calculate the density using the equation D=m/V. Laboratory Cautions 1. Do not pipet by mouth. 2. Do not drop objects on pan of balance. 3. Do not weigh warm objects....
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This note was uploaded on 03/10/2010 for the course ED 4070 taught by Professor Sweet during the Fall '09 term at Western Michigan.

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