Act 1 Study Guide 1. What do the witches in Scene 1 inform the readers? 2. In Scene 2‚ what does Duncan order Ross to do? 3. In Scene 3‚ why does Shakespeare most likely have the witches speak in rhyme instead of blank verse? 4. How does Macbeth show his ambition and curiosity about becoming king in Scene 3? 5. Duncan says to Macbeth‚ “Would thou hadst less deserved‚” in Scene 4‚ line 18. What does he mean by this? 6. How does Lady Macbeth know that Duncan is coming to
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The purpose of this experiment was to determine the speed at which a reaction took place between an iodine and hydrogen peroxide solution. In addition to a change in concentration‚ a change in temperature and a catalyst variable was also introduced to conclude whether or not their presence affected the overall speed of the reaction. In order to determine the effects of these variables‚ several iodine and hydrogen peroxide reactions were prepared‚ (all at varying temperatures‚ volumes‚ and concentrations)
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gases‚ increasing the concentration of the reactants increases the rate of reaction. In a few cases‚ increasing the concentration of one of the reactants may have little noticeable effect of the rate. These cases are discussed and explained further down this page. Don’t assume that if you double the concentration of one of the reactants that you will double the rate of the reaction. It may happen like that‚ but the relationship may well be more complicated. ------------------------------
Free Chemical reaction Chemical kinetics Reaction rate
Introduction: This experiment will investigate the factors that affect the rate of reaction of the enzyme catalyse‚ an enzyme found in food such as potato and liver. Catalyse is used to remove hydrogen peroxide from cells. The enzyme speeds up the rate of decomposition of hydrogen peroxide into water and oxygen. The reaction is: Catalyse is able to speed up the process because the enzyme lowers the activation energy of the reaction. This means that the free energy required for the reaction
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Decomposition of Hydrogen Peroxide by Potassium Iodide Brief Description: Two solutions are mixed resulting in an eruption of foam resembling a huge stream of toothpaste. This is the classic “Elephant Toothpaste” reaction. Purpose/Goal: Procedure presents an example of a catalyzed reaction. Explanation of Experiment: The rapid evolution of oxygen gas is produced by the following reaction: 2 H2O2 (aq) = 2 H2O (l) + O2 (g) + heat The decomposition of hydrogen peroxide in the presence
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INTRODUCTION Enzymes are biological catalysts that speed up chemical reactions‚ without being used up or changed. Catalase is a globular protein molecule that is found in all living cells. A globular protein is a protein with its molecules curled up into a ’ball’ shape. All enzymes have an active site. This is where another molecule(s) can bind with the enzyme. This molecule is known as the substrate. When the substrate binds with the enzyme‚ a product is produced. Enzymes are specific to their
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For many years Hydrogen peroxide was widely used for disinfecting‚ sterilization and its antiseptic properties‚ it is cheap and easily available OTC at any drug store or grocery store. “This readily available oxidant is rapidly converted to the highly reactive hydroxyl radical that damages an array of cellular components” (Atiyeh‚ Dibo‚ and Hayek‚ 2009). “The Medicines and Healthcare Products Regulatory Agency (MHRA‚ 2014). Have issued a warning regarding its use in surgery and in deep and large
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and that’s how I want you to be… united and happy! I love you all!" After what he said‚ he went to bed followed by his loyal dog named Rocco. I remember seating in the living room with my cousins talking about grandpa and his adventures when we heard Rocco barking out loud. Something was different about his bark; it was like he was crying. My whole family ran into my grandpa’s room and we found him asleep (that’s what we thought). Rocco was lying by his side with his head and ears down. My uncle
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materials in the hydrogen peroxide solution. Apparatus & Equipment: Beaker Test tubes Either: water bath (95oC) or Bunsen burner Materials: Fresh Liver Potato cubes Manganese dioxide Hydrogen peroxide** Wood splints **Caution: Hydrogen peroxide is formed continuously as a by-product of chemical reactions in living cells; it is a very toxic (poisonous) substance. [Note: using boiling tubes may provide better results.] 1. Label six fresh empty test or boiling tubes
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How different concentrations of hydrogen peroxide would affect the activity of catalase? 1. Variables Independent Concentration of hydrogen peroxide Dependent Volume of oxygen gas evolved Control Amount of liver used Location of liver sample obtained from the liver Type of liver used Possible enzymes transferred from hands during making liver homogenate Deterioration of liver Endpoint identification Volume of hydrogen peroxide added Reading on the syringe Room temperature
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