Observation and Description A.I observed the following things in the classroom. There is a rolling cart with a TV on it‚ in front of the classroom. There is an overhead projector sitting to the left of the teacher and a filing cabinet. There is a teacher’s podium to the right of a wipe off board that the students can see. There is another wipe off board on the right side of the classroom. There is a sorter on the teacher’s desk to help keep the students organized. The students desk are facing
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LAB Report #3 Introduction: In this lab we have focus on Isolation of bacteria from environment. Microorganisms are found throughout the environment: in the air and water; on the surface of any object such as clothes‚ walls‚ furniture; in soil and dust; and on and in our own bodies (skin and mucous membranes). In order to demonstrate the ubiquity and diversity of microbes in the environment‚ samples from immediate areas of the environment and/or from your body will be obtained and cultured
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I hope this letter reaches you in good health and good graces. I am writing this letter to tell you about this persistent issue I’ve had with my teeth. It all started when I was told that along with my four wisdom teeth I had to get an extra tooth which was growing on the bottom right row‚ extracted as well. After the first grueling month of post wisdom tooth extraction pain‚ came more problems. Now I have a hole in my mouth on that bottom right row and‚ I cant go one meal still to this day without
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B04 onion skin lab SNC 2D Name:______________________________ Lab: Investigation of the Structure of Onions Cells Purpose: To investigate the structure of onion cells and become familiar with some of the basic parts of a cell. This lab will also introduce you to the technique of preparing a wet mount slide. Materials: microscope pencil cover slips lens paper paper towels blank white paper ruler known field of views beaker tweezers glass slides eraser medicine dropper
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Chemistry 111 – Lab #2 Formula and Composition of a hydrate Purpose of the Experiment: The purpose of this experiment is to provide an opportunity to practice proper heating and cooling techniques and to calculate the formula of a known anhydrous compound and to calculate the percent of water in an unknown hydrate from results. Materials and Methods: Materials used for this experiment included 3 crucibles (with lids)‚ clay triangle‚ ring‚ burner‚ CaSO4.2H2O and one unknown hydrate
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Identification of the Specific Heat Capacity for a Calorimeter and of the Enthalpy of an Acid-Base Reaction Abstract The purpose of this lab was to first‚ determine the specific heat capacity of a homemade calorimeter‚ and second‚ to calculate the enthalpy of reaction for an acid-base reaction between 6M KOH and 6M HNO3. To determine the specific heat capacity of the calorimeter‚ two differing temperatures of water were measured and volume was measured and mixed within the calorimeter. The
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Aim The purpose of this experiment is to determine the percentage by mass of calcium carbonate in eggshells. Introduction To avoid the breakage of eggs before reaching market‚ the eggshells needs to be as strong as possible. The strength of eggshells is mainly determined by the percentage of calcium carbonate in it. In order to monitor the quality of eggshells‚ the following experiment has to be done to determine the percentage of calcium carbonate in eggshells. In this experiment‚ back titration
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Phuong Pham Prof. Johnson Lab 3 Gravimetric determination of Calcium as CaC2O4.H2O Feb‚ 27‚ 2014 I. Objective: The purpose of this lab is to determine how well gravimetric method measures the calcium level in a solution of known calcium concentration. II. Method: a) Overview: In this lab we will prepare 25 mL known concentration Calcium solutions. Then we will use Gravimetric method to determine the concentration of Calcium in each solution to figure out how well this method is. As we know
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Discussion: First of all‚ rinse all the apparatus that being used in the experiment with hydrochloric acid (HCL) then followed with distilled water (H₂O). Then‚ prepared the saturated calcium hydroxide (Ca (OH) ₂) solution into a filter funnel and filter paper over a second conical flask. Pour 100.00mL of saturated Ca (OH)₂ solution into a beaker and pour the solution through the filter paper by flowing the solution through a glass rod. After that‚ use a thermometer to measure the temperature of
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Physics is more around us than one would think. Physics is in all of the things you love to do. Take golf as an example there is velocity in a golf swing. Velocity is the speed of something in a given object and the speed of your club in the direction you are aiming is velocity. Also there is gravitational potential energy in the top of your backswing to cause you to pull the club downward. Kinetic energy is also in golf‚ During your backswing kinetic energy is causing your club to go up and in your
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