1. The use of microscale techniques does not change the hazardous nature of the reagents we use. Briefly describe the hazards associated with even small amounts of each of the following: a. concentrated hydrochloric acid‚ HCl HCL may be corrosive. It can cause burns to dosy tissue and can be deadly if inhaled or swallowed. b. sodium hydroxide‚ NaOH‚ solution NaOH is a very corrosive chemical and contact with it can cause burns to body tissue and
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Determination of Cations and Anions through Elimination and Confirmation Tests By: Symantha Resendiz Introduction A topic of great importance to all scientists is the identification of compounds‚ which is relevant in all aspects of their work in some way shape or form. Weather it may be determining what is causing sickness or what is polluting the air‚ it is very prevalent in the science world. In project 2‚ identification of cations and anions was preformed through a series of confirmation
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Abstract Qualitative analysis‚ a branch of analytical chemistry‚ deals with the identity of a substance found in a given sample‚ and not the amount of substance in it. It only concerns the substances present or absent in a given sample. Qualitative analysis is therefore used to determine unknown ions present in chemical samples by observing and analyzing results from various reactions of the sample with chemicals. Qualitative analysis is done through a series of steps. It is usually divided
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Chemistry Midterm Exam Answer each question below. Make sure to show your work on any math problem. 1. Write the formula for mercury(II) chloride. HgCl2 2. Arrange the following elements in order of decreasing atomic size: Li‚ C‚ K‚ F‚ Cs Cs>K>F>C>Li 3. Ammonia‚ NH3‚ is a typical ingredient in household cleaners. It is produced through a combination reaction involving N2(g) and H2(g). If 24.0 mol of H2(g) react with excess N2(g)‚ how many moles of ammonia
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Chemistry 1211K Lab Report Briana Limage Drawer #D20 Tuesday December 2‚ 2014 Lab Day and Time: Tuesday 2-5 Unknown # 4224034-DF14 Introduction The purpose of this semester long experiment was to determine an unknown organic acid. An organic acid is an organic compound with acidic properties. A base reacts with acids to form salts. Titrations are used to determine the concentration of unknown substances. The purpose of the KHP experiment was to determine the molarity of NaOH. HCl
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Authors likability‚ catching the attention of a vast audience instead of a few demographics‚ and last but not least the ability to pass the story with relevance from generation to generation. Jose Harper Professor Kareen Kubovchik English 102 research essay November 14‚ 2014 Harper 2 I. Time after time the best test for a novels longevity is how large the original fan base is during its time period. A. The Harry potter novels captured only a few of
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ENG 102 WP-1 - Evaluation Essay Write an essay that evaluates the value or effectiveness of something according to criteria you establish or identify in the essay. The Genre: You’re familiar with the book and movie reviews that appear in newspapers‚ magazines‚ and websites. They are just one kind of evaluative writing‚ but from them we can identify the key components of the genre. First‚ there is the object to be evaluated. Often this is a single thing—a music CD‚ a scholarly study‚ a corporation—but
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Regulating Inventory – An Examination of AASB 102 “Inventories” Inventories are in essence what organisations hold with an intention to sell‚ however directly or indirectly. For most businesses‚ this is how their profits are made‚ and it is reasonable to assume that these items account for much of an organisation’s activities. Such a big influence on indicators of financial performance and position warrants an equally large need for regulation to ensure that users of the financial statements are
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Chem 16 Notes UPD Should only be a supplement to discussions Table of Contents* [A] Lecture [1] Thermodynamics [2]Energy [3]Enthalpy [4]Hess’s Law [5]Determining Enthalpy [6]Heat Capacity [7]Calorimetry [8] Entropy [9] Gibb’s Free Energy [10] Waves [11] Quantum Theory [12] Quantum Numbers [13] Electron Configuration [14] Periodic Table [15] Periodic Trends KSev [16] Chemical Bonding [17] Formal Charge [18] Resonance Structure [19] Bonds [20] VSEPR [22] Valence Bond Theory [22] Molecular Orbital
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Application of Statistical Concepts in the Determination of Weight Variation in Samples Galingana‚ Cara Lois T. Department of Food Science and Nutrition‚ College of Home Economics University of the Philippines‚ Diliman‚ Quezon City Date Due: December 7‚ 2012 Date Submitted: December 7‚ 2012 ------------------------------------------------- Keywords: Sampling‚ Central Tendency‚ Accuracy‚ Precision‚ Quantity‚ Statistical Tests RESULTS AND DISCUSSION In the experiment‚ the class was
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