What kind of role does hydrogen peroxide and a liver have in their chemical reaction? In the experiment‚ we saw they had a reaction‚ but completed further tests to determine whether they changed after the reaction. Hydrogen peroxide is chemically changed into water and the liver is broken down in the reaction. In the experiment‚ a fresh piece of chicken liver was put into a test tube filled with 3% hydrogen peroxide. We knew a reaction was taking place because the hydrogen peroxide started to foam
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Stratford-upon-Avon. Analyzing this short story written by Arthur C. Clarke‚ one can conclude that he must enjoy writing about scientific breakthroughs and he utilizes vocabulary that is very different from most authors. The entire story is about a hydrogen bomb destroying the city of Stratford-upon-Avon. The story is told a few days after the incident. The story describes the state of the small town after the bomb was dropped on it. The bomb is destructive‚ there are no humans‚ animals or even dialogues
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Changes Each person experiences certain things‚ even the most simplest and innocent‚ that enlighten him or her or bring about a revelation. At one point in each of our lives we will or already have had one such meaningful incident. In Annie Dillard’s short essay “Dumbstruck‚” she recounts an experience just like that. Dillard’s experience jolts her‚ bringing to life an awareness of the harshness and inevitability that things happen‚ things are not permanent in this life. We first learn of her love
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FormulaMolecular Weight (g/mol)Density(g/cm3)Melting Point(oC)Boiling Point(oC)HazardO-vanillinC8H8O3152.15-42.5265-266Harmful andIrritantFor all 3vanillinC8H8O3152.151.05680-81285isovanillinC8H8O3152.15-113-115179Vanillyl alcohol*C8H10O3154.17-113-115--Sodium hydroxide**NaOH39.992.13181390CorrosiveHydrochloric acidHCl36.461.18-26110CorrosiveSodium borohydrideNaBH437.831.074505400IrritantCorrosive*Vanillyl alcohol is soluble in cold organic solvents such as ether/alcohol and hot water‚ but insoluble in
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Name: Jayanti Magar Title: Observations of Chemical Changes Date: 02/11/015 Pre Lab Questions: Use what you learned in this lab to answer the following questions. A. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). How would you test this material for the presence of sodium bicarbonate? I would add hydrochloric acid (HCl) with carbon dioxide with NaHCO3‚ and it should bubble and form gas. B. You know what color phenolphthalein and bromothymol
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that Affect the Rate of Reaction of the Decomposition of Hydrogen Peroxide Emilio Lanza Introduction- In this experiment‚ the rate of reaction‚ calculated in kPa sec-1‚ of the decomposition of hydrogen peroxide will be investigated to see how the change in concentration of hydrogen peroxide and the change in temperature affect the rate of reaction. The data will be collected by measuring the gas pressure. The product of Hydrogen Peroxide is oxygen in a gas state thus it is mandatory to use
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Chemical Change Course: General College Chemistry Purpose This experiment examines the reactions of common chemical s contained in consumer products. The purpose is to observe the macroscopic changes that these chemicals undergo. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products. Procedure We do not have the ability to see with a naked eye individual atoms and molecules reacting during chemical changes‚ however
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Investigation Srategy I am ivestigating the reaction of sodium thiosulphate and hydroclohric acid. sodium thiosulphate(aq) + Hydroclohric Acid (aq) --> Sodium cloride (aq) + Sulphur Dioxide (g) + Water (l) + Suplhur (s) Na(2)S(2)O(3) + 2 HCl --> 2NaCl + SO(2) + H(2)O + S The finished reaction of the 2 clear liquids is cloudy.I will use this change from clear to cloudy as an indicator as to when the reaction is finished. By using this change ‚ i can see the effect of changing other factors has
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11. I think that by substituting the words “with religious freedom” for “under god” is a good thing to do. Like Gwen Wilde said in her essay “several millions Americans do not believe in God”. By changing the words “under God” to “with religious freedom” all citizens and new citizens can feel comfortable saying the Pledge of Allegiance. By taking out “under God” from the Pledge of Allegiance and inserting “with religious freedom” in its place it would be an improvement to the Pledge of Allegiance
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