Experiment 5 Gravimetric Determination of Sulfate Eisman E. Morales TA: Jackeline Pennywiit Chemistry 121 02/14/2011 Purpose: To determine the percent sulfate in a sample using a semimicro scale gravimetric procedure. Procedure: Refer to pages 41-42 of General Chemistry volume 1 Laboratory Experiments by Judith Casey and Robert Tatz‚ Hayden McNeil Publishing‚ 2010 Report Sheet See attached report sheet. Report Questions 1. Explain how your calculated value for percent
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PRACTICAL 15: DETERMINATION OF HEAT OF NEUTRALIZATION Data collection: |Reaction |Initial Temperature/°C (±0.25) |Final Temperature of Mixture/°C (±0.25) | | |Acid |Base | | |HNO3 + NaOH |28.00 |28.25 |34.50 | |HNO3 + KOH |28.25 |28.25 |34.00
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Determination of an Equilibrium Constant Abstract: In this experiment‚ two reactions were run to determine the molar absorptivity and the equilibrium constant of FeSCN2+. The main principles used in this lab are equilibrium‚ LeChatlier’s Principle‚ Beer’s Law and Spectrocopy. The first reaction was run to completion using LeChatier’s Principle and the second reaction was run to equilibrium. A spectrophotometer was used to measure absorbances. Using a graph of absorbance versus concentration
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discredited their claims that Germany was the sole power with aggressive ambitions.[10] On 8 January 1918‚ United States President Woodrow Wilson issued a statement which became known as the Fourteen Points. This speech outlined a policy of free trade‚ open agreements‚ democracy and self-determination. It also called for a diplomatic end to the war‚ international disarmament‚ the withdrawal of the Central Powers from occupied territories‚ the creation of a Polish state‚ the redrawing of Europe’s borders
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Determination of rate of photosynthesis INTRODUCTION Photosynthesis is the major process by which light from the sun is captured by plants‚ algae and some bacteria to produce energy. It is a process in which light energy is converted into chemical energy which is then stored in sugars. Photosynthesis occurs in two stages‚ light-dependant reactions and light-independent reactions. In light-dependent reactions the chlorophyll traps light energy which is then used to excite electrons and split water
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Josh Copeland Professor Patton ENGL 1020M06 19 Feb. 2014 The Initiation Becoming an adult does not happen in a day. This process takes years of maturing and developing a brain that is capable of making smart life decisions. In the short stories “Stepdaughters” by Max Apple and “A&P” by John Updike‚ two young adults are put in difficult situations and forced to overcome them by making their own choices. In “Stepdaughters”‚ Stephanie‚ a high school student athlete struggles with her relationship
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Have you ever heard that America is a melting pot or a salad bowl? The metaphor for the melting pot is unfortunate and misleading for America. A more accurate metaphor would be a salad bowl‚ for the salad bowl can be very different from the melting pot because of all its ingredients can make it distinguished from the melting pot. Even today Americans are calling America a salad bowl instead of a melting pot. Whereas it once was a melting pot but soon changed. There have been many questions
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Reorder Point As a result to today’s uncertain economy‚ companies are searching for alternative ways to stay competitive. One wrong move of a company in doing their forecasting and inefficient inventory control‚ can lead to multiple product stock outs and back orders. This issue has caused sales loss as well as profit loss‚ which companies cannot afford to lose if they want to stay competitive. To resolve this issue‚ the companies are using inventory control model which is the ROP also known as
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Salad Bowl vs. Melting Pot There have been many to question and many so called answers to the merging of America and its different citizens. One cannot choose which term is better than the other; they both serve the same cause just in a different example. Along with this perspective‚ however‚ there is another expression that describes the diversity of people in America. It tends to be interpreted in the same way as the “melting pot‚” but actually has a slightly different meaning with a different
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Our iceberg is melting by John Kotter “Once upon a time a colony of penguins was living in the frozen Antarctic on an iceberg near what we call today Cape Washington.” The following summary will explain the key moments of the fable and how they relate to our lives. First‚ let’s introduce some of the more important penguins – the Leadership Council members. Louis‚ the head of the Leadership Council‚ could perhaps be considered the CEO of the penguin colony. Alice is a smart‚ aggressive member
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