calculate the number of moles of each reactant. 3. To predict which reactant is in excess. 4. To use drawings to relate microscopic events‚ to write a chemical equation that represent those microscopic events. 5. To learn how to measure the volume of a liquid using a buret. Prelab Questions: 1. Calculate the number of moles in 2.65g of zinc. 2. Calculate the number of moles of hydrochloric acid in 37.5mL of a 3.00M HCl solution. 3. Calculate how many moles of HCl are required
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Lab: investigating hooked law with springs Purpose: to find spring constants of different springs using the slope of a graph of change in heights vs. the weight force. Also‚ to be able to understand how spring constants change when you add springs in a series or paralle Pre lab predictions: We predicted that the graph of gravitational force (mg) as a function of stretch (delta x) would look like Data: Spring #1: y = 8.2941x + 0.0685 This table represents the different distances that
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Calorimetry To determine the specific heat of a metal and its approximate atomic mass. To determine the heat of neutralization for a strong acid-strong base reaction. To determine the quantity and direction of heat flow for the dissolution of salt. Post Lab Questions and Answers: 1. In parts A and B in‚ the calorimeter‚ although a good insulator‚ absorbs some heat when the system is above room temperature. Is the reported value for the specific heat of the metal too high or too low? Explain. Is the reported
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Chemistry Lab Report Water Hydration Introduction: A hydrated crystal or hydrated occurs when water becomes tightly attracted to a metal salt base on it’s polarity. The water molecules maintain integrity as molecules‚ however they are considered to be part of the formula of the hydrate. When the hydrate metal salt crystal is heated‚ the attractions to the water are broken by the heat energy and the water escape from the crystal. After heating the salt crystal is called as anhydrous‚ which
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10/24/2013 LAB TITLE: Single Replacement Reaction of Solid Copper with Silver Nitrate PURPOSE The purpose of this lab is to: • Observe a single replacement reaction‚ and • Calculate the mole ratio of silver (Ag) to copper (Cu) in the reaction MATERIALS • Copper wire (30 cm) • Large test tube • 250 ml beaker • Silver nitrate (AgNO3) powder • Dilute AgNO3 solution • Distilled water • Electronic balance • Glass stir rod • Watch glass PRE-LAB DISCUSSION A single
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Introduction The purpose of this lab was to test different antacids‚ to find out which would be the most effective to take. Stomach acid problems come from a overproduction‚ and build up of gastric acid (HCl). In order to determine which antacid is the more effective‚ four different brands of antacids were chosen‚ and tested. The purpose of an antacid is to balance out the pH inside a person’s stomach. PH is the measurement of molar concentration of hydrogen ions that are present in the solution
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MARKETING CONCEPTS Following are the six concepts of marketing • Production concept • Product concept • Selling concept • Marketing concept • Societal marketing concept • Holistic marketing concept THE PRODUCTION CONCEPT: DEFINITION BY KOTLER: “It is the idea that customers will favor products that are available and highly affordable and that the organization should therefore focus on improving production and distribution efficiency.” EXPLANATION: This concept is the
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A Discussion and Critical Evaluation on How Person-centred Theorists View Concepts of the Self Introduction As children grow they start to learn about themselves through their relationships with others and psychologists have evidenced how their ideas of themselves are significantly influenced by other people’s ideas and reactions to them. Dowling (2008) suggests that a child’s level of confidence is affected by their early experiences‚ successes and failures and it is recognised that a child’s
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Accounting Principles‚ Concepts and Conventions Accounting principles are guidelines & standards‚ which have been accepted by the accounting profession in preparation and presentation of accounts of the business. It is approved and normally accepted by the government bodies &controlling authorities. Accounting principles are uniform in order to understand in the same sense by those using it. Also they are not rigid (i.e. inflexible) like principle of gravity but they are flexible.
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one day and critically discuss how you are an actor in society; how you affect your social surroundings; and‚ how your daily life is shaped and constrained by society. This will allow you engage with many of the sociological concepts reviewed to-date including newer concepts such as impression management‚ stage theory and emotional labor. Explain why you needed to perform in such a way (i.e.‚ your motives‚ instincts‚ feelings‚ or structural constraints). Do you see who you are and where
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