CHEM 4183 Exam #2 Name:________________________ March 11‚ 2013 I. Multiple Choice (3 pts each) Choose the best answer and write it to the left of the problem number in the space provided. 1. What is a particular advantage of graphite furnace atomic absorption over flame atomic absorption? (a) higher temperature (b) lower S/N (c) less interference (d) small sample amounts 2. In atomic emission spectroscopy‚ it is desirable to have a high concentration of
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is dominated by subsistence farmers with only a few engaged in commercial farming. Major food crops cultivated are cassava‚ maize‚ plantain‚ rice and vegetables. The youth are engaged in vegetable production of which cabbage cultivation predominates (MOFA‚ 2001). Cabbage (Brassica oleracea var capitata) is a temperate vegetable crop which has become very popular in tropical Africa. Its origin and centre of differentiation is thought to be in the west of the Mediterranean basin or in
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Reactions Contents Introduction 3 Materials & Procedure 4 Raw Data 8 Processed Data 15 Graphs 16 Conclusion & Evaluation 17 Introduction Background Information Stoichiometry is a critical component in chemistry‚ and helps in understanding the quantitative relationship between the number of moles of reactants and products in a reaction. Objective In this experiment‚ the reactions between sodium hydroxide and hydrochloric acid‚ and sodium hydroxide and
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most of the toys‚ I’m sure I begged for‚ have been long forgotten over the years. But‚ there is one toy that had always outshined the rest. I’m not positive on how old I was when I got this new toy‚ but it was one that I will never forget. Lukah‚ my cabbage patch doll‚ was a security blanket in many ways for me as a child. I toted her everyplace I went from the time she came out of the box. My mom let me use the baby clothes that I wore as an infant. Therefore‚ Lukah had many outfits for every occasion
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Nuclear Chemistry: The Good vs. the Ugly The definition for nuclear chemistry is the application of chemical techniques to the solution of problems in nuclear physics. This includes the discovery of naturally occurring and synthetic radioactive elements and the results of nuclear fission. There are both pros and cons in nuclear chemistry. People believe that nuclear chemistry is bad for the environment but there are a lot of great things that can come out of this. Things like medical uses‚ food
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Red Cabbage Indicator Experiment Aim: The aim of our investigation was to identify and understand how different chemicals (Acids‚ alkalis and neutral) react and experience a change in colour due of this. Introduction: The red cabbage indicator shows how a usual household product such as red cabbage can make a suitable indicator and be able find out if a chemical is either and acid‚ alkali or neutral. Acids are a chemical that reacts with an alkali neutralising it producing water
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Chemistry Gen: Course Description Year 2 PART - II CGT 21a Unit I. Basic physical chemistry I * Gaseous state: Gas laws‚ kinetic theory of gas‚ collision and gas pressure derivation of gas laws from kinetic theory‚ average kinetic energy of translation. Boltzmann constant and absolute scale of temperature‚ Maxwell’s distribution law of molecular speeds (without derivation)‚ most probable‚ average and root mean square speed of gas molecules‚ principle of equipartition of energy (without
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Ase Ruth Alozie Chemistry Take home test May 4‚ 2013 In a laboratory experiment‚ a student reacted 2.8 grams of Fe (s) (steel wool) in excess CuSO4 (aq)‚ according to the following balanced equation: Fe(s) + CuSO4 (aq) -> FeSO4 + Cu(S). When the Fe(s) was completely consumed‚ the
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Section instructor: Supratim Giri Email: girisupr@gmail.com Office: BMBT 416 1 CY 101: Electrochemistry 2 Submarines can propagate on the sea surface just like a ship Unless it’s a nuclear submarine; just like a ship‚ submarine’s propulsion is supplied by a diesel engine The sub intakes oxygen from air to run its diesel engine. But in order to strike an enemy ship‚ it has to take plunge in deep sea and remain submerged for a period between 24 to 48 hours! How the submarine
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CHEMISTRY Guess Paper – 2013 Class – XI Subject - CHEMISTRY MAX MARKS=90 ……………………………………………………………………………………… General instructions: All questions are compulsory. Marks for each question are indicated against it. Questions number 1to 8 are very short –answer questions‚ carrying 1 mark each. Answer these in one word or about one sentence each. Questions number 9 to18 are short –answer questions‚ carrying 2 marks each. Answer these in about 30 words each. Questions number19 to27
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