GRAVIMETRIC DETERMINATION OF SULFATE Purpose You will be given a solid powder‚ which has been dried to constant mass. The sample is water soluble. The purpose of this experiment is to determine the concentration of sulfate in your solid sample using gravimetric analysis. Background Gravimetric Analysis The goal of most quantitative chemical analysis measurements is to estimate the relative abundance of an analyte in a chemical sample. For solid and liquid samples‚ a very common expression
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CH 127 – Chem 2 Lab Determination of an Equilibrium constant Goals The purpose of this experiment is to determine the equilibrium constant for the reaction Fe3+(aq) + HSCN(aq) –>FeSCN2+(aq) + H+(aq). The equilibrium constant expression Kc for Reaction is kc=FeSCN2+[H+]Fe3++[HSCN] Procedure *Preparation of the Beer’s law plot Prepare five solutions of FeSCN2+(aq) of known concentrations between 1x10-5M and 1x10-4M by diluting various volumes of 4.62x10-4 HSCN. Calculate the Final concentration
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Self-Determination in the Elderly 1 Nursing Students’ Perceptions of Self-Determination in Elderly People Maritta Valimaki‚ Helena Haapsaari‚ Jouko Katajisto and Ritta Suhonen Research and Design Professor Pollack April 10‚ 2007 Nursing Students’ Perceptions of Self-Determination in Elderly People: A Critique ABSTRACT Self-Determination in the Elderly 2 This
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Chemical Reactions Lab Synthesis Reactions: Synthesis reactions occur when two elements or compounds combine to create one single compound. The general equation of synthesis reactions is: A+B→AB. The following are the complete balanced equations for the five synthesis reactions performed in the lab. Reaction 1: Reaction 2: Reaction 3: Reaction 4: Reaction 5: The reaction of CO2 and water is a prime example of a synthesis reaction. This is a synthesis reaction because it follows the general
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Rate of Reaction Introduction Hydrogen Peroxide (H2O2)‚ is the most simple peroxide and commonly used in several household items such as toothpaste or as an alternative to bleach. However hydrogen peroxide it is a very dangerous substance when accumulated in large amounts. If that situation occurs this substance must be decomposed. But how can we decompose this reaction? Well it decomposes by itself very slowly (2H2O2(aq) -> 2H2O(l) + O2(g))‚ but that would take too long. This reaction can be sped
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Chapter 1 Chemical Reactions and Equations Q.1. Why should magnesium ribbon be cleaned before burning in air ? Ans: Magnesium ribbon is a very reactive metal. When stored it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide being a stable compound prevents further reaction of magnesium with oxygen. The magnesium is cleaned before burning in air to remove this layer so that the metal can be exposed to air properly. Q.2. Write the balanced
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The entire purpose of this documentary The Untouchables was to seek an answer to an abbreviated question: why has no Wall Street executive been criminally prosecuted for fraud tied to the sale of mortgages. But the unabbreviated question and the one that infuriates us as Americans is: why has no executive of a major Wall Street firm been criminally prosecuted for anything. Containing interviews with top prosecutors of the DOJ‚ government officials and industry whistleblowers‚ Frontline reports allegations
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of rule of law‚ maintenance of peace and order assumes paramount importance. Public order is synonymous with peace‚ safety and tranquility of the community. Maintenance of public order is a core function of governance. The Indian Constitution‚ while according a pre-eminent position for the fundamental rights of citizens‚ recognizes the importance of public order‚ by providing for legislation imposing reasonable restrictions in the interest of public order. Under the Constitution of India‚ the Union
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Strengths Strong and prestigious brand name: TH True milk is the top milk producer in Vietnam. It the first milk company applies the most modern technology into produced milk nearly 100% imported foreign country such as New Zealand‚ Germany‚ Israel. It also unique company producing product bring label: “sua sach” and was accredited by consumers. The brand TH True milk step by step into foreign market especially Asian countries: Japan‚ Korean‚ china‚ etc. nowadays‚ TH True milk have made up 40% market share
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Willful orders and why it is detrimental to the Marine Corps. Hello my name is privet first class Malik Zere Johnson‚ and today I will explain what it means to be willful to all orders and the consequences if we as a whole do not obey them. To understand where I found these articles or find them you self i took the liberty and wrote the links down on the last sheet. In the next few sentences I shall explain the articles I am quoting‚ and sighting from. Punitive Article of the UCMJ article 90-Assaulting
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