Introduction: The importance of this lab is to get a deeper understanding of how the concepts of solutions and insolubility applies to the lab’s purpose of making chalk using precipitation reactions. A precipitation reaction is when a solid/ precipitate (insoluble) is formed when two solutions that contain soluble salts are combined. Some additional scientific concepts investigated in this lab are insolubility‚ double replacement‚ and limiting reactants. Insolubility occurs when a solute is incapable
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figure. As we reach the middle of the paining there is a female. Behind the female there is light blue skies with a small green piece of land. The main image is in the middle part of the painting. The main image here is a female who is standing on a seashell that is of a cream color. She is standing fully naked the only thing that is covering her private area is her long reddish hair that starts off curly at the beginning of her head and goes down to her body with her left hand she is holding her red-gold
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_______________________________________________ Date: _____________ Purpose: To determine whether there is a difference in the amount of calcium carbonate in brown versus white chicken eggs. Background: Calcium carbonate (CaCO3) is a component of seashells and eggshells that gives them their strength and hardness. Because calcium carbonate is a base‚ it will react with acids to form a salt and water. The complete reaction of calcium carbonate with hydrochloric acid is: CaCO3 (s) + HCl (aq) ( CaCl2
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followings are existing studies that are related to our experimental study. Liquid eraser out of chalk dust and banana sap. CHALK DUST According to Mrs. FIXIT (2007) Lifts Stains Grease stains and ring around the collar can benefit from some chalk treatment! Rub a piece of white chalk into the stain and let it soak up the grease for a few minutes. Then‚ dust off any excess chalk and launder as usual. The chalk dust will get into the fibers and absorb the oils‚ making the stain easier to wash out.
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There are 28 species of Clownfish. Some places they are known as anemone fish. They are normally found at the bottom of the sea. Sea anemones are cnidarians(aquatic invertebrate)‚ which mean they are related to corals and jellyfish. Any other fish is likely to come and run into an anemone and they will be stung. Of the many species of anemones only 10 act as homes for the clownfish.Sea Cucumber: Over 1500 species of sea cucumbers exist world wide and about 200 of those exist in Australian waters
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calcium carbonate - a form of limestone that can be converted to chalk – that material that we use in writing on the blackboards. The purpose of this research is to produce a chalk that is non-toxic and therefore safe for school children‚ teachers‚ and other people who use chalk in their activities. The success of this study will contribute to the health of the general public. SCOPE AND LIMITATION OF THE STUDY The sidewalk chalk from an eggshell can be used in various ways by many people
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Acid Rain Lab Report Introduction: The problem was to see how crushed chalk and whole chalk weather differently. The independent variables are The temperature of the liquids The surface area of the chalk‚ crushed vs whole The dependant variable was the weathering of the chalk; this was calculated by measuring the foam reactant. Procedure: Part B- For the two partners recording data with the room temperature liquids‚ the materials where collected first. Two of the graduated
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Erica Timan November 2012 ENGL112 Pr. Flaherty Setting in Fahrenheit 451 Ray Bradbury’s novel‚ Fahrenheit 451‚ is a story about a futuristic America where technology rules everything and literature‚ and anything else that involves thinking a little deeper is banned. Houses and schools are full of wall sized TV screens‚ which are watched all day by the citizens of this futuristic society. Guy Montag‚ the main character‚ is a fireman. Firemen in this society don’t put out fires; they light
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Chapter I Introduction A. Background of the study Environmental pollution has reached an alarming level and the environment has suffered an irreparable damage. Solid‚ liquid and gas wastes from the industries; run off fertilizers and pesticides from the agricultural land; am domestic sewage from urban areas has reached a limit beyond disposal. According to Atlantic Wire‚ Food waste adds up to 40% in improper waste disposal that contributes in the pollution in our environment. Banana
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Egil M 18.12 1 How Many Moles in my Name? Purpose The purpose of this experiment is to see how many moles there are in my name when writing with a chalk stick. I will attempt to see how little of the chalk I can use and still see my name clearly. Research question How do we calculate moles? How might we manipulate the variables? Theory So if I am going to find out how many moles there are in my name I have to know how to work it out. The «Mole» is a unit of measurement‚ just like a dozen or
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