____________________ ____________________ ____________________ ____________________ Title: Determination of Molecular Weight of a Volatile Liquid By Vaporization: Dumas Method Background of the Study Problem In this experiment‚ an unknown liquid is in need to be identified and one of the key factors to identify it is to determine its molecular weight. In order to determine the molecular weight of a particular substance which in this experiment’s case is a volatile liquid‚ the need to convert the
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The effect of molecular weight on the diffusion rates of Potassium permanganate (KMnO4)‚ Potassium dichromate(K2Cr2O7) and Methylene Blue^1 _________________ Group 3 Sec. X-1L February 6‚ 2012 ____________________ ABSTRACT The effect of molecular weight on the diffusion of substances were tested through the use of agar-water gel with three wells placed in a petri dish. Drops of three different substances namely: Potassium
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How do we solve a problem like....stereotypes We can say that stereotypes are based in some kernel of truth. Some stereotypes are self-perpetuating‚ but is it up to the minority itself to regulate and stop those who perpetuate certain stereotypes? Can you tell one group of a minority to stop acting a certain way‚ to stop dressing a certain way‚ to stop talking a certain way? Would it really be better for society if we took out the kernels causing all the self-perpetuating problems? I believe
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M1 – Explain in detail the responsibilities of the different levels of government in the UK The central government is responsible for the health and safety of people‚ they provide health and safety by maintaining and improving the quality of the environment. The government also has the power to make laws for the entire country‚ in contrast with local governments. However‚ the Prime Minister (David Cameron) is head of the UK government so he’s responsible for all of the policy and decisions he
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HOW TO MAKE BABY STOP CRYING Babies during the early stage cry a lot and it becomes very difficult for parents to understand the reason and find a cure for the same. They generally find such situations very confusing and do not realise what is to be done to handle such a situation. Babies may cry due to the following reasons- HUNGER- this is the main reason why a baby may cry. When a baby is hungry‚ he or she may feel frustrated and start crying. So it should be checked that the baby is fed at regular
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Writing an Expository Essay An expository essay is a writing that conveys information or explains and proves something Introduction to Expository Writing In order to classify as expository‚ an essay needs: a thesis statement at the end of the introduction that answers the prompt to explain or discuss a particular subject matter Introduction to Expository Writing In order to classify as expository‚ an essay needs: strong evidence that backs up the thesis statement (in the body
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This document consists of 9 printed pages and 3 blank pages. SPA (NF/CGW) T30933/8 © UCLES 2007 [Turn over om .c s er UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level 2 1 The hydroxides of Group I metals (LiOH‚ NaOH‚ KOH‚ RbOH‚ CsOH) are highly corrosive white solids which rapidly absorb water vapour on exposure to the atmosphere. All of these solids dissolve exothermically in water. The enthalpy
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METHODOLOGY After formulating the hypothesis that the molecular weight affects the rate of diffusion‚ three different kinds of substances --potassium permanganate (KMNO4)‚ potassium dichromate (K2Cr2O7) and methylene blue (C16H18N3SCl)‚ were used to test the validity of the hypothesis. Potassium permanganate is an inorganic chemical compound which is in violet liquid form; potassium dichromate is an orange inorganic chemical reagent and methylene blue is a chemical compound commonly used for staining
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Effects of PowerPoint Presentations on Students’ Learning Project Report By: Dinesh Kumar Veloo PGP/17/248 K Parvathy PGP/17/213 Sourav Dhal PGP/17/242 Table of Contents Acknowledgement ……………………………………………………………………………….…… 2 Executive Summary …………………………………………………………………………………... 3 Purpose and Scope ………………………………………………………………………...………..... 4 Introduction …………………………………………………………………………………………… 5 Literature Review …………………………………………………………………………..…………. 6 Methodology ………………………………………………………………………………………
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A review of the contemporary knowledge of bovine tuberculosis and government policy in Iran Keyvan Tadayon a‚b‚ Ken Forbes b‚ Davoud Soleimani c‚ Reza Aref Pajoohi a‚ Bahman Marhmati c‚ Jamaloddin Javidi c‚ Rouholah Keshavarz a‚ Kioomars Soleimani a‚ Ali Shakibamehr a‚ Mohammad Mohammad Taheri a‚ Shojaat Dashti Pour a‚ Nader Mosavari a‚* a Razi Vaccine & Serum Research Institute‚ Karaj‚ Iran b Medical Microbiology Department‚ Medical School‚ Aberdeen University‚ Aberdeen‚ Scotland‚ UK c Iranian
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