solution‚ buffer‚ DPTPs‚ 15 ml conical tubes‚ cuvettes‚ marker‚ beaker‚ distilled water‚ spectrophotometer‚ stop watch. First four 15 ml conical tubes were labeled: “Stop solution“‚ “1.5 mM Substrate”‚ “Enzyme”‚ and “Buffer”. Then‚ seven cuvettes were located and five of them were labeled “E1-E5” and the other two were labeled “Start” and “End”. After 500 ul of “Stop solution“ was pipetted using a clean DPTP into the seven cuvettes. Next‚ two 15ml conical tubes were located and respectively labeled
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Non-conductor | Conducts electricity in solution | Non-Conductor | Classification | Ionic bond | Non-polar molecular solid | Covalent bond | Polar molecular solid | Ionic bond | Metallic bond | Calculations No calculations were required in this experiment. Discussion The flame test was undertaken
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1. Animals Experiments were carried out in adult male Wistar rats (200-225 g; 2-2.5 months old)‚ obtained from Central Animal Research Facility‚ NIMHANS‚ Bengaluru. Adult rats were group-housed (3 per cage) in a climate-controlled vivarium with a 12:12 h dark/light cycle. All animals had free access to food and drinking water except during the stress procedure or behavioral evaluation. All the experiments were performed during the light phase between 10:00 h and-14:00 h. All experiments were approved
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inside the nucleus. How did Rutherford discover the nucleus? Rutherford conducted the gold foil experiment. To do this he fired alpha particles at a thin sheet of gold foil.He proved that the majority of the mass of an atom was in a small portion‚ meaning that there must be a nucleus holding the protons and neutrons. Why is the gold foil experiment so significant? The significance of the gold foil experiment is that it proved Thomson’s theory of a plum pudding wrong as there isn’t a large amount of mass
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Experiment 1: Bromination of Acetanilide1 Precautions: Ethanol is flammable Sodium hypochlorite is an oxidizing agent and releases toxic fumes (handle in fume hood) Acetic acid is corrosive‚ harmful if inhaled‚ flammable and can cause burns (handle in fume hood) Gloves are recommended to avoid chemical contact with skin Reaction Scheme: Conversion of acetanilide to p-bromoacetanilide Procedure: To a 125 mL Erlenmeyer flask containing a mixture of 95% ethanol (6 mL) and acetic acid (5 mL)‚ dissolve
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Robert Brown) is the presumably random drifting of particles suspended in a fluid (a liquid or a gas) or the mathematical model used to describe such random movements‚ which is often called a particle theory. The experiment of Brownian motion in a smoke cell is a classic experiment that gives strong circumstantial evidence for the particulate nature of air. Materials: ✓ Smoke cell‚ incorporating a light source and lens (Whitley Bay pattern) ✓ Microscope‚ low power (e.g. x10
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4 Plasmon Resonances for PS@Au-Cu-Ag Composite Nanoshells 4.1 Introduction As shown in recent studies‚ various methods have been developed to expand the application area of noble metal nanoparticles and to control the morphology and the behavior. Composite microspheres with noble metal nanoshells have great advantages in catalysis‚ optics‚ conductivity‚ chemical sensors‚ and so on [1–5]. Moreover‚ these hybrid materials can prevent noble metal nanoparticles from agglomerating without the use of
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Trial # Guess Observation Explanation Trial 1 The dyed red water will not seep into the blue cold water. My guess was indeed correct and red water did not interfere with the blue water. Because the molecules in the blue water are much closer together because its cold and well the red water has warm/hot water and the molecules are everywhere. The molecules in the blue water are so dense that they’re making a layer so that the molecules from the red jar do not come through. Trial 2 I think
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(1) Answer to Question in lab manual. NO introduction/background etc. 1. What is the retention time for caffeine? Retention time for caffeine : 4.149+4.142+4.152+4.1454 = 4.15 2. What is the retention time for benzoic acid? Retention time for caffeine : 2.651+2.817+2.857+2.9274 = 2.81 3. How are the retention times for caffeine and benzoic acid related to their chemical structure and the nature of the chromatographic
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For the seventh experiment we will be performing different type of test to see how different chemical react with each other. The first experiment will be a demonstration the professor will give to the class. the first experiment you will be performing will include a test tube you will add a couple drops of dilute hydrochloric. you will add this to five little pieces of zinc metal. In next experiment you will performed you will put 2 ml of 3% hydrogen peroxide solution in a test tube .you will also
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