instrument. • Determining the accuracy of the actual volume of a volumetric pipette‚ volumetric flask & measuring cylinder. INTRODUCTION The purpose of this experiment is to investigate the measurement of the actual volume contents of volumetric glassware. If there is a slight variation in this instrument‚ it would cause systematic error and thus‚ the accuracy of results of an experiment or investigation would be affected. All volumetric glassware has marking on it. It is either being marked with
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about the many different ways they can use vinegar to clean their homes‚ promote their health‚ and enhance their beauty. Thesis Statement: Vinegar is a cheap‚ effective alternative to cleaning your home‚ promoting your health and enhancing your beauty. Introduction Ladies and Gentleman‚ what if I told you that vinegar has been used to clean homes‚ promote health‚ and enhance beauty for over 10‚000 years. In addition‚ what if I told you that vinegar only costs about $1.29 and is used in one out
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The percent yield of meso-1‚2-dibromo-1‚2-diphenylethane was calculated to be 66.36% and with a melting point of 235.1°C. Therefore‚ it can be concluded that this experiment was successfully conducted as the percent yield obtained is only 33.64% off from the equilibrium point‚ and because the melting point met the literature value. The percent yield for the product was less than 100%‚ indicating that were experimental errors‚ such as an undesirable side reaction‚ or more likely‚ an incomplete reaction
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Investigatory Project (Pineapple Peelings to Vinegar) Introduction A. Background of the Study A Pineapple is a fruit wherein you have to peel off the peelings to eat it‚ like any other fruits. The researchers chose this as their project to prove that Pineapple peelings have other uses. The researchers also noticed that the families in our country are very practical nowadays. Instead of throwing the peelings away‚ many families can earn something from it by using our experiment. They can produce
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Volumetric Analysis of Vitamin C by Titration The objective of this experiment is to use a redox reaction titration to accurately determine the amount of vitamin C in a sample of lemon juice‚ orange juice‚ or grapefruit juice. Chemistry of Vitamin C The chemical name for vitamin C is L-ascorbic acid. Its molecular formula is C6H8O6; its molar mass is 176.12 g/mole. Ascorbic acid is found throughout the plant and animal kingdoms‚ occurring in citrus fruits‚ hip berries (such as rose
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Analysis of Soda Ash and Volumetric Analysis of a Carbonate-Bicarbonate Mixture Manalo‚ Ma. Cristina Joyce B. Department of Chemical Engineering‚ Faculty of Engineering University of Santo Tomas Espana‚ Manila A. Abstract Crude sodium bicarbonate or commonly known as soda ash may contain amounts of impurities like chlorides and hydroxides. The total acid neutralizing capacity of a soda ash sample‚ its alkalinity value‚ was stated in terms of mass of sodium carbonate. In doing so‚ any
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experiment we were exposed to a variety of important concepts related to quantitative experimentation‚ including the proper use of glassware‚ and analytical balances. b. How did you do it? Briefly describe the procedures in 1 sentence. We calibrate a volumetric pipet and flask. We also calibrated a beaker and 50 mL buret. We also calculate the difference between the expected density and density obtained by our team. c. What happened? Briefly give the result (or results) of the experiment in 1 sentence
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Science Assignment 1.1 Introduction Vinegar was discovered around 5000 BC and it is documented to have been used by Hippocrates who has used vinegar as a medicine for wounds. Vinegar has many uses‚ although the main use for vinegar has been for treatment of wounds. It is also been commonly used as a cleaning agent throughout the years‚ even to this day. Vinegar is often used in cooking‚ especially salads. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1785201/ Neutralisation (in science) is to
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The percent yield was calculated to be 171% indicating a source of error. The high percent yield was due to the product being wet since we did not have enough time to dry the product with the vacuum filter—since we had to evacuate the building due to the fire alarm. If we were able to vacuum filter our product more‚ the percent yield would be close to 100%. 1. Assign the peaks in your NMR spectrum of your salicylic acid. See NMR spectrum on back 2. Assign the peaks in the IR spectrum of your salicylic
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FDA Vinegar / Acetic Acid Analysis Objective- Determine the Acetic acid level contained within the vinegar sample Background- Per the FDA regulation which states that consumer vinegar may contain no less than four percent and no more than five percent Acetic Acid‚ we will determine the Acetic Acid content of a sample of the vinegar in question through titration. After standardization of our titrant‚ which in this case will be NaOH‚ we will use this along with the indicator Phenolphthalein
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