Analysis……………………………………………………………………………………………………4 Issues 1. Ribbons an’ Bows’ Finances a. How would one report on Ribbons an’ Bows Inc.’s three-month operations through June 30? b. Was Ribbons an’ Bows‚ Inc. profitable? (Ignoring income taxes) c. Why did Ribbons an’ Bows‚ Inc.’s cash in the bank decline during the three-month operating period? 2. How would one report the financial condition of Ribbons an’ Bows‚ Inc. on June 30‚ 2006? 3. Should Carmen’s first
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Determine the Activation Energy of the Reaction between Br— and BrO3— in Acid Solution S.6 ( ) Name: [ ] ( ) Time allowed: 55 minutes Introduction: The reaction can be represented by 5Br—(aq) + BrO3—(aq) + 6H+(aq) → 3Br2(aq) + 3H2O(l) The progress of the reaction may be followed by adding a fixed amount of phenol together with some methyl red indicator. The bromine produced during the reaction reacts very rapidly with phenol. Once
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Magnesium Mg(Z=12) in Group 2 Alkaline Earth Metals The structure of the element: Giant lattice metallic structure of immobile positive metal ions surrounded by a ’sea’ of freely moving mobile electrons (so-called delocalised electrons). Physical properties: A moderately hard silvery-white solid; mpt 649oC; bpt 1090oC; good conductor of heat/electricity. Group‚ electron configuration (and oxidation states): Gp2 Alkaline Earth Metal; e.c. 2‚8‚2 or 1s2 2s2 2p6 3s2; (+2 only) e.g. MgCl2
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A neutralization reaction of ethanoic acid and sodium hydrogen carbonate Cristina Li 17th April 2017 Introduction The hypothesis is the balloon will be bigger and bigger with the increase of vinegar. The chemical reaction between the baking soda and vinegar produces bubbles of carbon dioxide gas as part of this acid-base reaction. Sodium hydrogen carbonate (baking
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CONCENTRATION ON REACTION RATE INTRODUCTION • Concentration is one factor which has an effect o the rate of a chemical reaction. In chemistry we describe concentration in terms of the number of moles of a substance there are in every cubic decimetre (litre) of solution‚ written as moles.dm-3 of M for short. • In this experiment you will find out how increasing the concentration of the acid solution changes the rate of the reaction between dilute hydrochloric acid and magnesium metal.
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electrically-charged and moves to either a negative or positive electrode. Ions that move to the negative which are called cations are positively charged and Ions that move to the positive which are called anions are negatively charged. They can be divided into acids‚ bases‚ and salts‚ because they all give ions when dissolved in water. Electrolytes are present in the human body‚ and the balance of the electrolytes in our bodies is essential for normal function of our cells and our organs. Electrolytes are important
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A Tale of 3 Pumpkins … Pumpkin Three: Ribbon by Heather Well we have come to the end of our tale of the three pumpkins. First‚ we met the lovely and vintage Book Page Pumpkin. Then our journey brought us to the glamorous and classy Faux Nailhead Pumpkin and last we meet the sweet and cheery Ribbon Pumpkin. Isn’t she just a little sweetheart?! Believe it or not she proved to be the most difficult pumpkin to make‚ though you’d never know it by her demure personality and the simplicity of her
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The Red Ribbon - g/ram Sally Mayfield was eighteen years old when she decided to leave town for the first time by herself. She lived in Brentwood‚ the older side of the valley. The trees were a thicker and the sidewalk was lifted and cracked‚ showing signs of decay. Everyone walked on the street‚ where you could always see a group of kids playing games or the neighbors walking their luxury dogs. Things there were simple and traditional; everything
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Mass of Magnesium(Mg) (g) | Volume of Hydrogen (H₂) (cm³) | 1st trial | 0.040 | 39.9 | 2nd trial | 0.040 | 40.3 | 3rd trial | 0.035 | 36.5 | Quantitative data: The Magnesium was silvery-white‚ lustrous and relatively flexible before being placed in the burette. Whilst reacting with the hydrochloric acid‚ it dissolved and bubbles were visible. The hydrochloric acid slowly diffused downwards. Calculations: Volume of un-diffused hydrochloric acid = 25 cm³ Average mass of magnesium = 0.038
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Experiment 4: Analyze a solution of potassium hydroxide using standard hydrochloric acid Theory . Introduction: Titration is a procedure used in chemistry in order to determines the molarity of an acid or a base. In the other words‚ it is also consider as acid-base neutralization reaction (Darrell D. Ebbing 1976). A chemical reaction is set up between a know volume of a solution of unknown concentration and a known volume of a solution with a known concentration. The relative acidity or
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