Kean Gerard Sumayo Experiment 1 APPLICATION OF STATISTICAL CONCEPTS IN THE DETERMINATION OF WEIGHT VARIATION IN SAMPLES I. OBJECTIVES 1. To determine the use of the different statistical concepts 2. To perform the proper applications of the statistical methods/ concepts on determining the weight variations of samples II. RESULTS and DISCUSSIONS A. Weight of Samples Ten 1-peso coins were used as samples for this experiment and were weighed carefully
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Experiment 1 Introduction to basic lab equipment and components Introduction: To use an electronics lab‚ it is necessary to become familiar with some typical equipments and components‚ to reduce the accident and damaging the equipments. So the experiment will be accomplished with the right result and everything still in one peace. Objective: • To be familiar and understandings the operation of the basic components and equipments in electronics lab. • To know the color code of the
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that make up what it is. Philosophy is defined as the love of wisdom. The study of the fundamental nature of knowledge‚ reality‚ and existence‚ especially when considered as an academic discipline. It tries to explain many aspects in everyday life. The three main branches of philosophy are metaphysics‚ which asks the question of what is reality or the nature of reality? Epistemology‚ which asks how we know what we know? Finally‚ Ethics‚ which asks how we should live in light of what we know about
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hydrogen tartrate. (PL3) Calculate the theoretical solubility product‚ Ksp‚ of potassium hydrogen tartrate at 25C and at 100C. (PL4) Write a balanced equation showing the titration of potassium hydrogen tartrate solution with NaOH; Procedure : (1) Weigh out ~2.0g of finely powdered potassium hydrogen tartrate into 250.mL beaker. (2) Add 150.mL of distilled water and stir well. (3) Using a vacuum filtration‚ filter the solution into a clean‚ dry Erlenmeyer flask with a side arm. (4) Record
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AIM: The aim of the experiment is to discover if ...... / how .. affects ... RESEARCH QUESTION: Does the …………………….. affect the …………………….. when you …………………………………….? e.g. Does the distance from the flame affect the time taken for the wax to melt when you heat the metal rod? HYPOTHESIS: (say WHAT you THINK WILL HAPPEN and explain WHY you think this) VARIABLES (these are the things which can change the results of your experiment) INDEPENDENT this variable is the ONE YOU CHANGE a little every
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1. Indicators were identified with the observation that the colour of some flowers depend on soil composition Classify common substances as acidic‚ basic or neutral * An acid is a substance which in solution produces hydrogen ions‚ H+ or more strictly H3O+‚ sometimes called hydronium ions * A base is a substance which either contains the oxide O2- or hydroxide ion OH- or which in solution produces the hydroxide ion. * A soluble base is called an alkali Common properties of all acids:
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CHEM RESEARCH TASK 1. INDICATORS Identify and describe some everyday uses of indicators including the testing of soil acidity/basicity. • Indicators are used regularly in chemical laboratories during chemical reactions. One important use is to determine the end point of a titration when an acid reacts with an alkali. The reactants and products of such a reaction are colourless so an indicator is a useful way to visually determine when the reaction is complete. Chemists also need to monitor
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Experiment 1: Bromination of Acetanilide1 Precautions: Ethanol is flammable Sodium hypochlorite is an oxidizing agent and releases toxic fumes (handle in fume hood) Acetic acid is corrosive‚ harmful if inhaled‚ flammable and can cause burns (handle in fume hood) Gloves are recommended to avoid chemical contact with skin Reaction Scheme: Conversion of acetanilide to p-bromoacetanilide Procedure: To a 125 mL Erlenmeyer flask containing a mixture of 95% ethanol (6 mL) and acetic acid (5 mL)‚ dissolve
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UNIT 1 FAMILIES AND HOUSEHOLDS Time allowed: 1hr Total marks: 60 Item 1A Recent decades have seen major changes in families and households in the United Kingdom. Some sociologists argue that‚ with the rise of the symmetrical family‚ the patriarchal power of the husband has disappeared and relationships have become more equal and democratic. However‚ feminists argue that women still have a dual burden to carry. There have also been many changes in the patterns of marriage. For example‚ the
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EXPERIMENT 1 “HOW DO I LOVE THEE LET ME COUNT THE WAYS...” DETERMINATION OF AVOGADRO’S CONSTANT Techniques Calibration drop counting MSDS available for • • stearic acid‚ CH3(CH2)16COOH cyclohexane‚ C6H12 Principles molar volume molecular structures surface areas and volumes Avogadro’s constant percent error Recommended Advanced Reading Chapter 3 in Petrucci‚ Herring‚ Madura‚ & Bissonnette’s General Chemistry‚10th Ed. Avogadro Constant...1 INTRODUCTION
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