a few crystals of Naphthalene to 3 clean‚ dry test tubes. 2. Add 2-3 mL water to test tube #1‚ 2-3 mL cyclohexane to test tube #2‚ and 2-3 mL of ethyl alcohol to test tube #3. 3. Stir each test tube with separate mixing rods. 4. Record the results. S for soluble‚ SP for sparingly soluble and I for insoluble. 5. Repeat this experiment using the same 3 solvent: water‚ cyclohexane‚ and ethyl alcohol with the unknown solid and unknown liquid. 6. Record the results (refer to #4)
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reaction because this compound is both a diene and a dienophile capable of reacting with itself which is evidenced by the product of such reaction‚ dicyclopentadiene‚ which was used in the fractional distillation portion of the experiment to obtain cyclopentadiene. Thus‚ the purpose of the fractional distillation in this experiment was to prevent the side reaction from occurring by cracking this compound into its monomer cyclopentadiene.10 The desired product was procured as evidenced by the completion
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TABLE OF CONTENTS What is a Mixture? What are the types of Mixtures? Define:-solutions -suspensions -colloids (Draw and compare.) Methods of separation 1. Filtration 2. Distillation (simple and fractional) 3. Paper chromatography 4. Solvent extraction 5. Separating funnel 6. Evaporation 7. Crystallization 8. Sublimation Draw and explain each. What is a mixture??? A mixture is a combination of two or more substances that are not chemically
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1. (a) The diagram below represents the industrial fractional distillation of crude oil. (i) Identify fraction A. (ii) What property of the fractions allows them to be separated in the column? (2) (b) A gas oil fraction from the distillation of crude oil contains hydrocarbons in the C15 to C19 range. These hydrocarbons can be cracked by strong heating. (i) Write the molecular formula for the alkane with 19 carbon atoms. (ii) Name the type of reaction involved in cracking. (iii) Write
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conditions making layers of rock. The heat of the rocks and the increased pressure turned the dead animals into crude oil. I have found out that they put crude oil into a machine and separate using an interesting method called fractional distillation. Fractional distillation of crude oil is where they separate out oil into hydrocarbons with similar boiling points‚ called fractions. Each hydrocarbon fraction contains molecules with similar numbers of carbon atoms. To my understanding I think each of
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Fermentation of Carbohydrates: Ethanol from Sucrose Objective: To demonstrate a fermentation process‚ isolate the ethanol produced by fractional distillation‚ determine the composition of the ethanol solution recovered‚ and make stoichiometric and yield calculations. Procedures: Fermentation Weigh out 20.0 g of sucrose and place it into a 250-mL Erlenmeyer flask. Add 100 mL of water and gently shake until all the sucrose has dissolved. To this solution add 0.60 g of dipotassium hydrogen phosphate
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EFFECTS OF VOLATILE ORGANIC COMPOUNDS (10244818) Volatile organic compounds (VOCs) are organic chemical compounds that have high enough vapor pressures under normal conditions to significantly vaporize and enter the atmosphere. According to EPA ’s Terms of the Environment‚ a volatile organic compound is "any organic compound that participates in atmospheric photochemical reactions except those designated by EPA as having negligible photochemical reactivity." VOC can also stand for the term “volatile
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Lesson 2 Lab: Weighing on an Analytical Balance & Distillation PART 1 Begin by viewing the following Thinkwell video 15.1.8 CIA Demonstration: Weighing on an Analytical Balance After you watch the above video‚ answer the questions below in sufficient detail: (a) (2 pts) What are the features of an electronic balance? Include all of those discussed in the video. Answer: There were two features of an electronic balance discussed in this video. First there is the electronic read out which makes
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CHEMISTRY ISU: REFINEMENT OF CRUDE OIL My ISU will focus on Petroleum‚ a complex mixture of hydrocarbons that occurs in the Earth in liquid‚ gaseous‚ or solid forms. The term is usually restricted to the liquid form‚ commonly called crude oil‚ but as a technical term it also includes natural gas and the viscous or solid form known as bitumen. In its liquid and gaseous states‚ it is also known as Oil‚ or Crude Oil. Italicized are segments from my ISU or introductions to the planned topics.
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3.1.1 Identify that matter is made of particles that are continuously moving and interacting The particle theory states that all matter is made up of tiny particles and they are constantly moving/continual state of motion. 1.1.2 Identify the difference between elements‚ compounds and mixtures in terms of particle theory Elements are simplest form substance meaning cannot be decomposed further physically or chemically. They are made up of same type of atoms only e.g. helium‚ oxygen. Compounds
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