Ancient Egyptian Pyramids
Ancient
Egyptian Pyramids
(Idea inspired by the novel The Alchemist by Paulo Coelho)
*Open the top half of the pyramid first for the introduction letter and author background
II. Procedure
• Place a cork with a small hole in it inside of a test tube and find the weight of the two together using a sensitive balance.
• Pour 0.5 mL of the unknown volatile liquid into the test tube, insert the cork, and place the tube into boiling hot water while keeping the cork above water level. As the gas evaporates, excess gas will be released throughout the whole in the cork. Keep the test tube in the hot water for at least three minutes after all the liquid has vaporized and measure the temperature of the water.
• Quickly cool the test tube in an ice bath, dry it off and find the mass of the test tube, cork, and condensed liquid.
• Then, fill the test tube to the top with water, insert the cork and find the mass of the test tube, water, and cork. Calculate the mass of the volatile liquid and record the barometric pressure.
III. Data
The following data table shows the information collected while determining the molecular mass of a volatile liquid. The reason for collecting the data was to determine the molecular mass of a volatile liquid. The first three rows show mass measurements collected using a sensitive balance in order to figure out the mass of the volatile liquid and mass of the water. The fourth row shows the temperature of the boiling water determined in order to figure out the temperature of the gas formed from the volatile liquid. The temperature was collected using a digital thermometer. The fifth row shows the atmospheric pressure of the room the lab was conducted in. The atmospheric pressure was determined to find the pressure of the gas formed from the volatile liquid.
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