| Percent Yield Lab | | | | 4/20/2012 | Mrs.Sardella Per4 Matt ‚ Kait Mrs.Sardella Per4 Matt ‚ Kait | Introduction *Limiting Reactant: A reactant that is completely consumed during a chemical reaction‚ limiting the amount of product that is produced. *Excess Reactant: A reactant that remains after a reaction is over. *Theoretical Yield: The amount of product that is predicted by stoichiometric calculations *Actual Yield: The amount of product that is recovered
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William Safire: Abolish the Penny William Safire writes a fine argumentative piece on why America no longer has any need for a bothersome coin of copper that “costs more in employee-hours‚” than it is actually worth. Safire uses compelling evidence and real life scenarios to convince his audience that we need to rid our lives of this‚ “outdated‚ almost worthless‚ bothersome and wasteful penny.” If the reader is able to read between the lines and use some analytical processes‚ they will come 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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Mesta Dr. Mbah December 6‚ 2012 Percent Yield of a Chemical Reaction Introduction Yield is the quantity of product in a chemical reaction‚ the theoretical yield of a reaction can be calculated using mole ratios from the balanced chemical reaction. The actual yield has to be obtained and measured in a laboratory. It may be usual to often find the actual yield to be less than the theoretical yield due to many different factors. This gives rise to the concept of percent yield. Sodium bicarbonate and
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off of the measuring devices. For this experiment‚ we followed the procedures as indicated in the lab manual. Data Copper Rod Measurements Trial 1 2 3 4 Length (m) 0.601 0.6 0.601 0.6 Diameter (caliper-m) 0.0006 0.00065 0.0006
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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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Fifteen-year-old Amari loves life in her home village in Africa. She spends her days strolling along the stream‚ daydreaming about her handsome future husband‚ teasing her little brother‚ and avoiding chores. But everything changes the day the pale-faced visitors arrive. Everyone contributes for the celebration to welcome the strangers. Amari helps her mother arrange the food‚ her storyteller father shares his tales‚ her fiancé plays his drum‚ and everyone dances. But then their world shatters
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Ten Percent Summary – Chapter 9 Lessons 1-4 The French Revolution & Napoleon In World History & Geography‚ Chapter 9 the French Revolution Begins‚ Radical Revolution & Reaction‚ The Rise of Napoleon and The Napoleonic Wars & The Fall of Napoleon and The European Reaction‚ McGraw – Hill Networks explains The French Revolution & Napoleon. Causes of the French Revolution were often seen as a major turning point in European history. The long – range causes of the French revolution are to be found in
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writer’s grandparents feel that a penny is worth bending over and picking it off of the ground every time they come across one. Benjamin Franklin once said‚ “A penny saved is a penny earned” (BrainyQuote 2016). If you pick up every penny that you find‚ they eventually will add up. There used to be candy stores that had penny candy but nowadays‚ there is nothing that actually costs a penny. Many people look down at the ground‚ see a penny and leave it there. For them‚ the penny is not worth any effort to
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Pennies were the first coin minted in the U.S ‚the first U.S penny is 223 years old. In recent years‚ there has been a heated debate about money in the United States. Surprisingly‚ it is about the pros and cons of producing and using pennies. In my opinion the penny should no longer be used and produced in America today. Here are some reasons why‚ pennies cost more than it’s worth‚ they are not big money‚ and are so close to worthless. ‘‘ Michael Cooper‚ an eighth grader
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