The lab in which we conducted last Tuesday was an analysis of a hydrate and what happens to it when it is heated. A hydrate is a crystalline compound which water molecules are chemically bound to it. In the lab‚ we were to analyze the difference in grams of the hydrate and the anhydrate. An anhydrate is the crystalline compound without the water molecules bound to it. During our lab‚ we were to heat up the crucible‚ the crucible with hydrate‚ and the crucible with an anhydrous and write down each
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Introduction The purpose of this lab is to determine the percent mass of Cu in a penny and see if the fabricator that makes the planchets for the government is using the correct amounts of Cu in the pennies. The composition of a standard penny is 97.5% Zn and 2.5% Cu. In the lab we will be using Beer’s Law (A=elc+b where A is solution absorbance‚ e is a constant called molar absorbency‚ l is the length in cm‚ and c is the concentration). Using Beer’s Law in this lab a colorimeter is used to find the
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Lab report is one way we used during of after an experiment in a laboratory to subtly record and discuss the experiment. During a lab‚ we sometimes can observe only the physical part of the experiment‚ or may be some visible chemical changes. These changes indicate that the experiment we do is successful or not. However‚ in order to understand and achieve more from just simply doing the experiment‚ we write lab report to more profoundly understand the internal meanings of the experiment we do‚ and
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Water Testing Lab Conclusion In this lab‚ chemical tests were used to check for the presence of calcium‚ chloride‚ and sulfate ions in water samples. To do this‚ the testers started with five samples: a reference‚ a sample of only the chemical being tested for‚ a control‚ distilled water‚ two home water samples‚ and a school water sample. To test for the ions in the water‚ a chemical that would react with the ion and create a precipitate was added. If the precipitate was not easily visible‚ a
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Final Project Week 5 (Name) MBA5008 – Quantitative Analysis & Decision Making January 31‚ 2015 Dr. Jim Stotler Abstract Email address providers were examined in a survey which compared AOL‚ Gmail‚ Hotmail‚ and Yahoo! These emails were analyzed on ten different dimensions based on the five‚ Big 5 personality dimensions‚ Tech Savvy‚ work performance‚ professional appearance‚ attendance/punctuality and overall performance effectiveness. This paper will address that we do not agree
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original state and the percent of the hydrate recovered was calculated by using the mass of the rehydrated sample by the mass of the original hydrate and then multiplied by 100%. Data Presentation & Analysis Table 1: The data was collected from the lab experiment. Sample calculations are shown. Mass of beaker with sample 30.765g Mass of empty beaker 30.263g Mass of sample .502g Mass of beaker with sample after 1st heat 30.661g Mass of beaker with sample after 2nd heat 30.657g Heating mass
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Lab 4 Part 1: 10 points Assignment: Create an Internet and E-mail Acceptable Use Policy Learning Objectives and Outcomes Research and compare Internet and e-mail use policies enforced by other organizations. Create an Internet OR e-mail use policy for an organization. Assignment Requirements You are a networking intern at Richman Investments. An employee of the company used employer-owned equipment to access the Internet and check his personal Web-based e-mail account. He followed a
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A Qualitative Analysis of the WTO ’s Role on Trade and Environment Issues McCormick‚ Rachel. Global Environmental Politics‚ Volume 6‚ Number 1‚ February 2006‚ pp. 102-124 (Article) Published by The MIT Press For additional information about this article http://muse.jhu.edu/journals/gep/summary/v006/6.1mccormick.html Access Provided by University of Manchester at 02/27/11 6:00PM GMT Rachel McCormick A Qualitative Analysis of the WTO’s Role on Trade and Environment Issues A Qualitative
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Density Lab Partners: Betty Alcaraz Date: 9/10/13 Teacher: Wright Class: 7th period Introduction/Purpose: To determine the densities of unknown substances. Pre-Lab: 1. Which is heavier‚ a pound of feathers or a pound of lead? a. A pound of lead. 2. What is the density of a mineral if 427 g of the mineral occupy a volume of 35.0cm3? b. 12.2g/cm3 3. The water level in a graduated cylinder stands at 20.0 mL before and at 26.2 mL after a 16.74 g metal sample
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Collision Lab Simulation Purpose: To study elastic and inelastic collisions in one-dimension. Background Information: Momentum: is a measure of mass in motion. It is the product of mass x velocity. Conservation of Momentum: in the absence of external forces‚ such as friction‚ the linear momentum of a system remains constant. Procedure: 1. Open web browser and go to the site: http://phet.colorado.edu 2. Click “play with sims”‚ then “physics”‚ and then “motion” 3. Find the “Collision Lab” 4
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