give the accurate measurements of the amount of HCl that did not react with the calcium carbonate. Apparatus Mortar and Pestle Standard Lab Balance Hot Plates 200ml beaker Measuring cylinder (10ml‚ 100ml) Pipette Burette Conical Flask Bunsen burner Any reagents used in this experiment Eggshell NaOH 1moldm3 HCl 1moldm3 Phenolphthalein Procedure 1. Each student should obtain one egg and the necessary glassware from the side bench. 2. Break the egg into a beaker. Add water to the egg and
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What are the dependent and independent variables? What are your controls - both positive and negative? How will you collect your data? How will you present your data (charts‚ graphs‚ types)? How will you analyze your data? Observations 1. A plant grows three inches faster per day wWhen Sally eats healthy foods and exercises regularly‚ her blood pressure is 10 points lower than when she does not exercise and eats fatty foods. 4. The Italian restaurant across the street closes at 9
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Experiment D-Pre-lab: Synthesis of a Room Temperature Ionic Liquid (RTIL) Name: Morgan Smith Student #:130635880 Date Submitted: November 7‚ 2014 Lab Section: Friday 2:30pm‚ Section 9 T.A: Matt Halloran 1. Refer to the last page. 2. Arrow pushing mechanism: 3. Refluxing is when the reactants are boiled and the vapor that is produced is cooled. When the vapor is cooled it changes back to its liquid state and returns to the flask. 4. The visual cue that allows you to determine that the
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Biology 1020 Review Questions for Final Exam 1. who proposed the theory of natural selection ← Darwin and Wallace 2. what are the four characteristic features of natural selection ← Overpopulation ← Inherited variations within the species ← competition ← Survival of the fittest 3. how is fitness measured ← by survival and by the numbers who survive 4. what are some examples of selection in action ← Peppered
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b 1 Exercise 1: Dissolved oxygen is oxygen that is trapped in a fluid‚ such as water. Since virtually every living organism requires oxygen to survive‚ it is a necessary component of water systems such as streams‚ lakes and rivers in order to support aquatic life. The dissolved oxygen is measure in units of ppm—or parts per million. Examine the data in Table 2 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from; finally
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Up Experiment 2D: Separation of a mixture by Paper Chromatography Objectives: 1. To assemble and operate a paper chromatography apparatus 2. To study and the significance of Rf values 3. To test various food colorings and to calculate their Rf values 4. To compare measured Rf values with standard Rf values 5. To separate mixtures of food coloring into their components 6. To identify the components of mixtures by means of their Rf values Materials / Apparatus: See “Health Chemistry Lab Experiments”
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Rousselle Molina Ms.Moraima Group 2; HW 1 9-25-12 EVOLUTION; NATURAL SELECTION I.ABSTRACT: As we all know‚ evolution is a change in population over a period of time. Natural Selection as its own mechanism takes place for survival of the offspring from varying changes of the environment. One good example of natural selection is the population of peppered moth predominant in England. During pre-industrial revolution‚ there were highly significant light colored moths that
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Length of Balloon (0.1cm) Trial: Time: Seconds (0.1cm) 30 1 2.0 30 2 2.1 30 3 1.9 30 4 2.2 30 5 1.8 mean: 2.0 Displacement (meters and centimeters) (1) Work (0.1) Power (0.1) 11 m‚ 18 cm 559 279.5 11 m‚ 32 cm 566 269.5 10 m‚ 33 cm 516.5 271.8 11 m‚ 32 cm 566 257.3 10 m‚ 32 cm 516 286.7 10 m‚ 89.4 cm 544.7 273.0 Veloctiy (m/s) Displacement/Time Acceleration (m/s/s) Velocity/Time Trial 1 11.18/2.0 = 5.59 5.59/2.0 = 2.80 Trial 2 11.32/2.1 = 5.39 5.39/2.1 = 2.57 Trial 3 10.33/1.9 = 5.43 5.43/1
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Lab 1 Installing Servers This lab contains the following exercises and activities: Exercise 1.1 Exercise 1.2 Lab Challenge Performing a Clean Installation Installing Windows Server Migration Tools (WSMT) Accessing a WSMT Distribution Point BEFORE YOU BEGIN The lab environment consists of computers connected to a local area network. The computers required for this lab are listed in Table 1-1. Table 1-1 Computers Required for Lab 1 Computer Operating System Computer Name New server
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Osmosis Lab Report The essential focus of the experiment was to acquire data for the mass change resulting from osmosis in order to determine the carbohydrate solution of the carrot cells. The carrots were a vegetable used within the experiment with a carbohydrate solution around .5 M. The hypothesis is if there are carrots in different carbohydrate solutions then there will be a percent change in mass. The carrots have large vacuoles that hold water‚ this allows the mass to increase when the hypertonic
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