Lab Report - Experiment#4 - 1. Questions Density =...

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Questions 1. Density = mass/volume A. Record the mass of clean and dry graduated cylinder. B. Fill the graduated cylinder halfway with the unknown liquid. C. Record the mass of graduated cylinder with unknown liquid in it. D. Calculate the mass of unknown liquid (mass unknown = mass graduated cylinder+unkonwn mass graduated cylinder ) E. Read and record the volume of unknown liquid using the bottom of meniscus. F. Calculate the density of unknown (Density unknown = mass unknown /volume unknown ) 2. It is important to keep the probe in the reflux ring, not in the liquid because this is where the where the vapor is in equilibrium wit the liquid condensate. The temperature in this area reflects the temperature of the liquid in equilibrium with the vapor above the boiling solution. It is a measure of the boiling point. However, for soluble, non-volatile, higher boiling point would result than that of pure substance. 3. Table which supports my reasoning: Compound Dipole Moment Solubility in Water Density compared to Water Trans-1,2 dibromoethylene No No Denser Cis-1,2-dichloroethylene Yes No Denser Cyclooctane No No Less dense Acetic Acid Yes Yes Denser It is possible to identify the contents of each bottle using information obtained from Parts I to III of this experiment. Even without boiling point, each compound has distinct
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Lab Report - Experiment#4 - 1. Questions Density =...

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