Rates of Reaction Coursework Aim: To find out how different concentrations of sodium thiosulphate (Na S2 O3) affects the speed of its reaction with Hydrochloric acid (HCL). Introduction When Sodium Thiosulphate and Hydrochloric acid react they produce a cloudy precipitate. Both of the chemicals are clear solutions and they react together to form a yellow precipitate of sulphur‚ the equation for this reaction is: Na2 S2 O3 + HCL‚ H2 O + NaCL + SO2 + S Sodium Thiosulphate + Hydrochloric
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Arabic‚ and Persian Farsi. The DLPT is updated every 10 to 15 years‚ and the most recent transition—from DLPT IV to DLPT5—included a greater emphasis on testing listening comprehension with authentic materials. In turn‚ this has led to a growing interest in the factors that make second language (L2) listening difficult. To examine these factors‚ CASL reviewed the current scientific literature and summarized the characteristics of listeners‚ passages‚ and testing conditions. The review targeted
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Chapter 3‚ Problem 3 Using published sources (for example‚ The Wall Street Journal‚ Barron’s‚ Federal Reserve Bulletin)‚ look up the exchange rate for U. S. dollars with Japanese yen for each of the past 10 years (you can use an average for the year or a specific time period each year). Japanese Yen to U. S. Dollar (Retrieved from http://research.stlouisfed.org/fred2/data/EXJPUS.txt ) Date Example - Japan Stock Price in Yen Example -
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involves a marked and sudden increase of violent and property crime. Meanwhile‚ violent crime generally includes crime of violence such as murder‚ gang robbery with firearm‚ rape and sexual abuse. What is the main cause of crime and its imperative relationship to poverty? Such a question at first may seem unanswerable because we could never pin point the exact cause of such worldwide problems. Crime and poverty have been around from time was time and there is no doubt that crime is on the increase not
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hydrochloric acid (HCl) on the rate of reaction (mol dm-3 s-1) for the following chemical reaction: CaCO3(s) + HCl(aq) CaCl2(s) + H2O(l) + CO2(g) Research question: How does altering concentration (mol dm-3) of hydrochloric acid (HCl) affect the rate of reaction (g/s) for the following reaction: CaCO3(s) + HCl(aq) CaCl2(s) + H2O(l) + CO2(g) Background information: The reaction between calcium carbonate and hydrochloric acid is an example of a neutralization reaction between an acid and a base. Neutralization
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One view is that the literacy rate has risen from 72% to 90% in the last 30 years. According to the 2005 Functional Literacy‚ Education‚ and Mass Media Survey conducted by the National Statistics Office (NSO)‚ 48.4 million or 84% of the estimated 57.6 million Filipinos who are 10 to 64 years old are said to be "functionally" literate (Source: "8 out of 10 Filipinos are functionally literate" by D. Pepito‚ TODAY newspaper‚ February 17‚ 2005). Functional literacy was found to be higher in females
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Changes of Foreign exchange Rates Categories of Foreign Currency (FC) transaction and operation; FC Transaction : Local entity enters transaction with foreign entity using foreign currency Example: purchase or sale of products and payment in foreign currency. Lending or borrowing in foreign currency. FC operation: Local entity has branches‚ subsidiaries‚ associate or JV in foreign countries. The accounts are in foreign currency. Exchange exposure: the risk of exchange losses or gain from
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International Journal of Economics and Finance; Vol. 5‚ No. 10; 2013 ISSN 1916-971XE-ISSN 1916-9728 Published by Canadian Center of Science and Education The Real Exchange Rate Misalignment: Application of Behavioral Equilibrium Exchange Rate BEER to Morocco1980Q1–2012Q4 Hind Lebdaoui1 1 School of finance‚ Shanghai University of Finance & Economics‚ Shanghai‚ China Correspondence: Hind Lebdaoui‚ School of finance‚ Shanghai University of Finance & Economics‚ Shanghai 200083‚ China.
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Factors Affecting Heart Rate‚ Respiratory Rate‚ and Blood Pressure By Ann-Geyn PanganFor Michele MacKenieInvestigative Team:Biology 0993Nejat MuradOctober 14‚ 2014Jenn SakelariouIntroduction In class we studied circulatory system‚ especially the heart that plays a large part in human. We learned and analyzed its part and function in the body. The purpose of this experiment is to compare the readings of how the heart rate‚ respiratory rate and blood pressure respond to increasing levels of physical
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DIVORCE RATES Today’s society had increased the number of divorce‚ it is more than ever before. People choose divorce as an easy way to get rid of their simplest problems that may occur in a marriage. First‚ couples get married too young. Sometimes people get married just because they are expecting a baby. Couples get married thinking that their relationship will be like a fairy tale‚ like movies‚ but they do not realize that marriage leads with normal problems that appear in the journey
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