Ashley Silva Lab 7: Three Stooges in Chemical Reactions Objective: The purpose of this lab is to experimentally determine the equilibrium constant‚ Kc ‚ for the following chemical reaction: Fe3+ (aq) + SCN-(aq) ↔FeSCN2+(aq) Background Information: A system is at equilibrium when the rate of the forward reaction is the same as the rate of the reverse reaction. There is no change in concentration for the reactants or products at chemical equilibrium. When the system is disturbed there
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Lucas was signed to Atlantic records in 2016 after releasing his first solo mixtape Along Came Joyner‚ which featured the song speculated to have started his rise in prominence "Ross Capicchioni" (Thomas). Afterwards‚ Lucas went on to make “I’m Not Racist” which is likely his most noteworthy hit yet. “I’m Not Racist” likely utilized ethos to reach the partisan
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Grignard Synthesis of Triphenylmethanol from Benzophenone Purpose: The purpose of this experiment was to synthesize the tertiary alcohol triphenylmethanol from a Grignard reagent‚ phenyl magnesium bromide. The Grignard reagent was synthesized from bromobenzene and magnesium and then reacted with benzophenone to produce triphenylmethanol. It was important that water be excluded from the reaction‚ in order to prevent the formation of benzene. The reaction of phenyl magnesium bromide and benzophenone
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Biology 181 Ana Marti-Subirana Identification of unknown a-Amylase through testing different temperatures and pH values to detect the absorbance of maltose. Introduction: Enzymes are biological catalysts‚ mainly proteins for this experiment‚ generated by an organism to speed up chemical reactions. They have active sites on which the substrate is attached‚ and then broken up or joined. For this experiment we are going to work with the enzyme a-amylase. Amylase is an enzyme that breaks
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distilled water) iii.20 drops of 1% sucrose solution iv.20 drops of 1% lactose solution v.20 drops of 1% starch solution(1g of starch is added in 99ml distilled water and put in boil) b) Add 3 drops of Molisch reagent to each of the five test tubes‚3 drops of Molisch reagent is added.Each test tube is seal with Parafilm® and each tube is shook to ensure mixing.Then‚the test tube is inclined at 45%
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Buddhist Analyse and evaluate how their beliefs and ideas have influenced their work Introduction I have chosen two contemporary figures for my comparison‚ Gene Roddenberry (creator of Star Trek)‚ a famous contemporary humanist‚ and George Lucas (creator of Star Wars)‚ a famous contemporary Buddhist Methodist. I believe a comparison of these two figures can offer an interesting and exciting application of religious studies in the classroom‚ relating two perhaps unknown subjects for many students
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Please calculate the grams of the excess reagent still remaining in solution. G. Before the advent of Advil and Tylenol‚ did people simply have to “grin and bear it” when it came to pain? One of the most common ancient medicines for pain‚ fever‚ and inflammation came as a byproduct of the willow
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10. The gravimetric determination of nickel in alloys Gravimetric analyses belong to the most precise‚ because contemporary analytical balances make possible determination of the mass of a sample with great accuracy. In these analyses one should obtain high purity compound of the analyzed element or a compound directly obtained from the analyzed substance). This reaction has to be exactly stoichiometric. It is also important that the weighed compound was non-hydroscopic and stable in air‚ it also
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change observed is usually in shades of blue (as seen in Figure 1) and is darker with higher concentrations of the reactive compounds‚ this colour change occurs because the samples containing polyphenols are reduced by the Folin–Ciocalteu reagent. The reagent will react with any reducing substances in the sample thus making filtration a vital step in sample preparation. The standards used to determine the standard curve (Figure 3) were prepared using gallic acid and 40% ethanol. This is because
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heavily against the door and jostles the handle. I can hear her gasp and sputter as if water is filling up her lungs. “Very dramatic‚ Lady Macbeth‚” I reply. There’s a few more moments of coughing and her weakened voice finds its way through the door. “Lucas‚ can’t you smell it?” She chokes out her words‚ like it’s the last ones she’ll ever say. Yeah‚ right. She’s a good actor‚ but I’m not as dumb as a post. I grin and flush the toilet. “Now I can’t‚” I snickered. Then it’s silent again‚ but it’s unnerving
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