or non-ideal mixtures of two volatile liquids as a function of chemical composition. Introduction: For ideal mixtures of volatile liquids the vapour pressure of any given mixture may be obtained by applying Raoult ’s Law to each of the components of the mixture. If‚ for example‚ pA* and pB* are the vapour pressures of pure compound A and B respectively‚ and A and B are their mole fractions in a particular mixture‚ then the partial vapour pressures of each component over that mixture at a given
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flask. Under a fume hood‚ slowly add 30 ml of bleach‚ and oxidizing agent‚ to the mixture and stir for 20 minutes. Acetic acid will react with bleach to make it a better oxidizing agent and form hopochlorous acid. Hypochlorous acid will then oxidize cyclohexanol. The mixture turned cloudy during the process but clear up after a few minutes. The flask will be warm since this is an exothermic reaction. Next‚ the mixture will be tested using potassium iodide-starch test. If the test is positive then proceed
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constant for a compound b is the path length of the cuvette in cm c is the concentration of the compound in the sample solution in mg L-1 3) Using Beer Lambert Law to calculate the concentration of different compounds in a mixture‚ Atotal = K1C1 + K2C2 Where
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Lab #3 Atomic Structure & Classification of Matter Objectives Write the correct symbols or names of some elements. Describe some physical properties of the elements you observe. Categorize an element as a metal or nonmetal from its physical properties. Given the complete symbol of an atom‚ determine its mass number‚ and the number of protons‚ neutrons‚ and electrons. To identify and classify different types of matter. Background Primary substances‚ called elements‚
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The Effect of Temperature on the Rate of Yeast Respiration Abstract Carbon dioxide is a waste product of yeast respiration. A series of experiment was conducted to answer the question; does temperature have an effect on yeast respiration? If the amount of carbon dioxide is directly related to temperature‚ then varying degrees of temperature will result in different rates of respiration in yeast. The experiment will be tested using yeast and sugar at different water temperatures. I
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unknown plastics. First‚ use 50mL of water and place each plastic in the water and determine if they float or sink. Make sure to take note if they float or sink. 5. If the plastic floated‚ you will place it in a mixture of ethanol and water using the following steps(this is creating a mixture with a density between 0.920 g/mL and 0.953 g/mL): a. Place
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DISCUSSION 1. During the ice cream production‚ why is it important to heat the egg yolk-sugar-milk-whipping cream mixture to 80°C for 15 seconds? This process is known as pasteurization‚ which is designed for the destruction of pathogenic bacteria to make the product safe to consume. This is especially important when making ice cream with egg yolk emulsion. This process also reduces the number of spoilage organisms such as psychrotrophs‚ and helps to hydrate some of the components such as proteins
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2. Put half in a microwave until liquefied 3. How pour mixture mixture or left it flow down the plastic plate down to the finishing place while you time them 4. Do the same to the solid candies 5. record time 6. repeat 2 more times 7. When you are done‚ you might as well eat the candies!! Procedures 1. Put your 4 types of candies into a bowl or a plate 2. Put half in a microwave until liquefied 3. How pour mixture mixture or left it flow down the plastic plate down to the finishing
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polymer ball and it said a 10:1 ratio was used. 5mL of borax and 50mL of polyvinyl alcohol was poured into a 250mL beaker. Then the mixture was stirred for about 10 minutes until the mixture became a sticky substance. 55mL of polyvinyl acetate was then poured into the mixture. The mixture was stirred for 2-3 minutes. During week two we were supposed to “tweak” our mixture and also make our polymer ball resistant to the heat and cold because it was going to be shipped from Florida to New Mexico to Alaska
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P-Nitroaniline is also used in gum inhibitors‚ poultry medicines and as a corrosion inhibitor. [2] Nitration is a type of chemical reaction which a nitro group is added to or substituted in a molecule. It can be carried out by a mixture of concentrated nitric acid and sulfuric acid. Mixture is useful to obtain the active nitronium ion. Electrophilic aromatic substitution is a method used when a functional group is needed to be substituted on to an aromatic compound. In the nitration‚ nitronium ion acts as
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