Analysis of Antacid Tablets Lab Lab date: June 9‚ 2011 Introduction: This lab is designed to provide the student with experience in understanding the principals of acid/base neutralization and to develop the laboratory skill of titration. Procedure: 1. Gather materials: 0.20 M HCl solution‚ 0.20 M NaOH solution‚ 50 ml burette‚ bromophenol blue‚ 150 ml flask‚ electronic scale‚ tripod stand‚ motor and pestle‚ Bunsen burner‚ Tums tablet‚ Rolaid tablet‚ and Equate tablet. 2. Weigh antacid
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Energies 2008‚ 1‚ 79-92; DOI: 10.3390/en1020079 energies ISSN 1424-8220 www.mdpi.org/energies Article Esterification of Oleic Acid for Biodiesel Production Catalyzed by SnCl2: A Kinetic Investigation Abiney L. Cardoso‚ Soraia Cristina Gonzaga Neves and Marcio J. da Silva * Departament of Chemistry‚ Federal University of Viçosa‚ Viçosa‚ Minas Gerais‚ Brazil‚ 36570-000. * Author to whom correspondence should be addressed; E-Mail:silvamj2003@ufv.br Received: 5 August 2008; in revised form:
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Aspirin Tablets Objective: Determine the percentage of aspirin (acetylsalicylic acid) present in two different commercial tablets by titrating the solution with a base. Also determine whether the aspirin is a strong or weak acid according to the Bronsted- Lowry and Lewis theories and deduce the formula of the acid- base reaction. Independent Variable: The amount of base (NaOH) in moles that are needed to neutralize the solution. Dependent Variable: Percentage of aspirin (acetylsalicylic acid) found
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THE RISE OF TABLET COMPUTERS In today’s digital world‚ tablet computers are the leading mobile devices for daily usage. Eagerness for buying a tablet is spreading around the world. In subways‚ in restaurants more and more people are seen with a tablet in the hand. Some of them play games‚ some navigate through the Internet. Today‚ most people prefer to buy a tablet computer instead of a notebook or netbook. The question is why people buy tablets? They are not cheap‚ relative to their notebook
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Tablets vs. Textbooks Our technology is without doubt advancing at an exponential rate‚ but how best to use it is still being discerned. Since early Egypt to our modern day society books have been the most prevalent form of education; but now we are transitioning into a world that revolves around efficiency and effectiveness. Although we still use textbooks in our school‚ many schools are beginning to switch to electronic tablets for their economic and educational value over textbooks.
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Objective: To understand the importance of choosing suitable indicators for detecting the end points of acid-base titrations. To obtain titration curves some acid-base titrations. Materials and method: As shown in page 2 and 3 in General Chemistry practical manual 2011. Result: Part 1: Suitability of Indicators Strong acid-weak base titration Table I: Volume Titration Rough Accurate 1 Accurate 2 Final volume 0.00 14.65 0.00 Initial volume 35.20 48.00 33.50 Volume of
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is without a doubt‚ how the PC tablet market is divided. From the time we invested in researching the tablet market a very clear hierarchy has appeared with Apple iPad being the market leader at 56%‚ Amazon Fire at 14.3% and Samsung Galaxy Tab at 8% from 2011 Q4. To be able to take Amazon in to account we had to discard the Amazon Kindle Fire and replace it with the Amazon Fire on the grounds that the Kindle Fire is an e-reader and is not considered as a PC tablet. Previously the Amazon Fire was
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Analysis of Antacid Tablets I. Introduction An acid-base titration is a method of neutralizing strong acids. Unbeknownst to many‚ acid-base titrations occur on a daily basis. Our stomachs use acid to help us digest our food – approximately .155 hydrochloric acid (HCl) with a pH of 2-3. When too much of this acid is formed in the stomach‚ heartburn and other discomfort occurs. This is when people grab for their antacids; these are bases that neutralize the excess acid in the stomach
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Books VS. Tablets Do you ever wonder what it would be like if your school had tablets instead of those boring old heavy text books? Well I did. I thought that if we had tablets it would be so much simpler‚ they are way more up to date‚ and you can get great video connection. Text books should be in all classrooms because they are simpler‚ more up to date‚ and they have great connection. I think that they are going to be used in every classroom around the world soon. I think that tablets are simple
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aspirin tablets dissolve in both Water (H2O [representing saliva]) and Hydrochloric Acid (HCl [representing the stomach’s acid]). The amount of Water and Hydrochloric Acid will be kept constant between tablets‚ and tests. Aim To investigate and compare the rates at which different Aspirin Tablets dissolve. The different kinds of Aspirin tablets are: Enteric Coated Tablets Capsules Regular Tablets Dissolving Tablets. Each tablet will be dissolves in both Water and Hydrochloric Acid (representing
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