and as a mouthwash or gargle” (“Hydrogen” 2004). These are other uses for hydrogen peroxide which includes being a mouthwash as well as a treatment for tooth aches. In the words of Mark Johnson‚ “It may also be used as a mouth rinse to help remove mucus or to relieve minor mouth irritation (e.g.‚ due to canker/cold sores‚ gingivitis). This
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The Atlantic slave trade began in the sixteenth century and was abolished in the British Empire in the early nineteenth century. During four centuries American and Europeans nations obtained enslaved people from African slave-traders (although some were captured by Europeans slave traders). Born in Guyana in 1950‚ author and poet Grace Nichols moved into England in 1977 where she has compiled several books of poetry‚ many of which discuss the slave trade. Her poem “taint” is an illustration of her
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amounts in the vagina‚ mouth‚ digestive tract‚ and on the skin. Usually it does not cause disease or symptoms. Candida and the many other germs or microorganisms that normally live in the vagina keep each other in balance. However‚ when the vagina has certain favorable conditions‚ the number of Candida albicans increases‚ leading to a yeast infection. Some of these favorable conditions include: · Antibiotics used to treat other types of infections change
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Table of Contents Laboratory Safety and Laboratory Guidelines Common and Special Laboratory Equipment Materials and Other Requirements Common Laboratory Operations and Techniques Experiment 1 …………………………………………………………………………..10 Properties of Matter Experiment 2 …………………………………………………………………………. 12 Chemical Changes Experiment 3 …………………………………………………………………………. 15 Classification of Matter Experiment 4 …………………………………………………………………………
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the solution and rinse the beaker with the hot water. Rinse the filter cake with hot distilled water. Transfer the filter paper into a clean beaker. Add ~ 10 mL of 3M sulfuric acid to the beaker in order to dissolve the filtrate. Remove and rinse the filter paper. Now add ~ 0.35 g of zinc powder to the solution and stir until the solution becomes clear. Dissolve the excess zinc with more sulfuric acid. Decant the liquid with a stirring rod‚ retaining only the copper. Rinse the copper with
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Bio Lab Report Title: Gram-Negative and Gram-Positive contamination in yogurt. Introduction: There is bacteria that is beneficial and harmful in the human. Yogurt was choosed to be the best example that contains this bacteria. What happens to be the difference between these two types of bacteria‚ and how are they harmful? The bacteria is considered “Gram-Negative‚” and the substance is considered contaminated when there is more negative bacteria than positive bacteria. This will prove or disapprove
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Experiment #10 Volumetric Analysis The Titration of Acids and Bases Purpose This experiment will allow you to gain practical experience in the preparing standard solutions‚ using a pipette and a buret‚ and performing standard titrations. You will use this experience to experimentally determine the concentration of acetic acid in an unknown solution. There are three parts to this experiment‚ they are 1. Preparation a standard solution of oxalic acid (~0.07 M) 2. Preparation a sodium
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Procedure 1. Rinse bucket and fill it ¾ way 2. Rinse glassware 3. Place thermometer in tray 4. Record pressure of Mercury 5. Record temperature of water in tray 6. Weigh your dried lighter before the procedure and after the procedure and record the butane gas lost 7. Record collected volume of butane by releasing into graduated cylinder 8. Test the gas by removing the cylinder from the water and inserting a lit splint inside of the cylinder. 9. Rinse all materials
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Mole Ratio of a Chemical Reaction: Copper & Silver Nitrate Lab #4 OBJECTIVE In this experiment‚ you will determine the number of moles of reactants and products present in the reaction of copper and silver nitrate‚ and calculate their mole-to-mole ratio. The mole-to-mole ratio relating to the disappearance of copper and the formation of silver metal will be used to write the balanced equation for the reaction. The reaction of copper metal with silver nitrate solution is a single
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Operating Instructions & Installation Instructions Washing Machine (Domestic use) Model No. NA - 148VB3 NA - 147VB3 NA - 128VB3 NA - 127VB3 Thank you for purchasing this appliance. - For optimum performance and safety‚ please read these instructions carefully. - Before connecting‚ operating or adjusting this appliance‚ please read the instructions completely. Please keep this manual for future reference. Read Before Using SAFETY PRECAUTIONS Washing Instructions Optional Functions Maintenance
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