Submit your completed lab report to the Lab: Photosynthesis Lab assignment link for grading. For information on how this assignment will be graded‚ please visit the Course Information sectionChlorophyll and Accessory Pigments A pigment is any substance that absorbs light. The color we see comes from the wavelengths of light that reflect. Chlorophyll‚ the green pigment common to all photosynthetic cells‚ absorbs all wavelengths of visible light except green. The green reflects back to our eyes
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Parts Observations 1 Evaporation Both the water and alcohol felt cool on the wrist. The water felt cooler at first‚ then the alcohol started evaporating faster and it felt cooler. The alcohol drew heat from the body as it’s evaporating thus creating a greater heat loss and temperature change. 3 Skin Prints Different areas of the skin have different skin prints. A fingerprint has a loop design‚ whereas the skin print of a palm is straight and linear. The lines of a wrist print are interconnected
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Engineering B45 Concrete Lab Report Introduction: Concrete is a mixture of sand and rock or similar inert material (aggregates) held together by a cementing material. Usually the cementing material is Portland cement‚ but sometimes binders such as asphalt or gypsum are used‚ in which case the concrete may be called asphaltic concrete or gypsum concrete. Properties of concrete are governed not only by the properties of its ingredients (cement‚ water‚ sand‚ and coarse aggregate) but also‚ to a great
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Law December 5‚ 2011 Kylie Case‚ Emma McKee‚ Rebecca Smith Purpose: In this lab‚ the purpose was to verify Hess’s Law. Theory: Four main topics were covered during this experiment including enthalpy of reaction‚ heat of formation‚ Hess’s Law‚ and calorimetry. The first being enthalpy of reaction‚ ΔHrxn‚ which is the heat or enthalpy change for a chemical reaction. The energy change is equal to the amount of heat transferred at a constant pressure in the reaction. The change represents the
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Introduction In unit 7.3 the experiment tested the ability of lactase to specifically bind and interact with lactose compared to maltose. In unit 7.4 the experiment tested the role‚ if any‚ that metal ions have on the activity of lactase. My hypothesis for unit 7.3 was knowing that lactase is specific for lactose‚ lactose will separate into galactose and glucose‚ as maltose will not change (153-155). Lactase should like lactose. For unit 7.4 my hypothesis was that EDTA will remove the ions‚ and
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Limiting Reagent and Percent Yield Aim To determine the limiting reagent between the reaction of lead (II) nitrate and potassium iodide. To determine the percent yield of lead (II) iodide. Date Started: 13/4/12. Finished: 19/4/12. Data collection and processing Measurements: * Amount of distilled water: 75.0ml ± 0.5ml. * Mass of watch glass: 31.65g ± 0.01g. * Mass of watch glass + potassium iodide: 32.45g ± 0.01g. * Mass of potassium iodide: 0.8g ± 0.02g. * Mass of watch
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TABLE OF CONTENT NO. | CONTENT | PAGE | 1. | Title | 2 | 2. | Theory | 2 | 3. | Introduction | 2 | 4. | Objective | 3 | 5. | Apparatus | 3 | 6. | Procedure | 4 | 7. | Result | 6 | 8. | Calculation | 10 | 9. | Discussion | 13 | 10. | Conclusion | 14 | 11. | References | 14 | TITLE: H1 – Osborne Reynolds Demonstration INTRODUCTION: Osborne Reynold’s Demonstration has been designed for students experiment on the laminar‚ transition and turbulent flow. It consists of a transparent
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Tittle : Investigation of the Enzymatic Effects of Materials on Hydrogen Peroxide Solution Objective: To investigates the enzymatic effect of various materials in the hydrogen peroxide solution. Table 1 Test Tube Contents with 5 cm3 hydrogen peroxide Observations before and after using wood splint Observation of after Observation of after adding hydrogen using wooden glowing peroxide splinter 1 Fresh liver Moderate
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EXPERIMENT I Photoreduction of Benzophenone Introduction The study of chemical reactions‚ isomerizations and physical behavior that may occur under the influence of visible and/or ultraviolet light is called Photochemistry. The fundamental principles for understanding photochemical transformations are that light must be absorbed by a compound in order for a photochemical reaction to take place‚ and that for each photon of light absorbed by a chemical system only one molecule is activated for
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Chemotherapeutic Agents of Control: Introduction: Chemotherapeutic agents are chemical substances used to treat various forms of infectious diseases. The chemotherapeutic agent works by stopping the bacteria from reproducing. There are two different kinds of chemotherapeutic agents. The first kind is an antibiotic‚ which slow down the growth of microorganisms. The second kind of chemotherapeutic agent is synthetic drugs. Synthetic drugs are artificially made in a laboratory. Chemotherapy
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