Measurement and Density Your Name: ____________________________________________________________ __ Purpose of this Lab What is the goal of this lab? What question are you trying to answer‚ or what problem are you trying to explain? Hypothesis After reading the lab instructions - but before starting the lab - record your best “educated guess” about each experiment: Experiment 1: Which method of finding the density give you the least percent error and why? Experiment 2: After completing the
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Step 3: Raise pay from $14/hour to $18/hour through Compensation Studies Bill Coleman‚ a salary.com columnist‚ published an article promoting fairness in pay and described what most organizations favor‚ which is a compensation study. Coleman explains how underpay and overpay salaries can determine the value of one’s job by quoting “if you underpay employees‚ they will eventually look for a better offers…if you overpay an employee‚ it will cause payroll budget and profitability to suffer. That’s why
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hydrochloric acid. Control: the amount of hydrochloric acid in each trial. Materials -The materials used in this experiment were test tubes‚ a beaker‚ a scale‚ goggles‚ stop watch‚ magnesium‚ and hydrochloric acid. Procedures -Before starting the lab you need to get the following materials: test tubes‚ a beaker‚ a scale‚ goggles‚ stop watch‚ magnesium‚ and hydrochloric acid. Weigh the empty individual test tubes. Step 1- put 1 gram of magnesium into a test tube. Step 2- add 10mL of hydrochloric
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GS104 Lab Report Experiment # 5 Pendulum and the Calculation of g David Case: February 14‚ 2015 Experiment #5 Pendulum and the Calculation of g Objectives: To calculate the acceleration due to gravity by observing the motion of a pendulum. To investigate the effect of varying mass on the period of a pendulum. To investigate the effect of varying the length of a pendulum on the period Materials: stopwatch support for the pendulum
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Biology 160 Lab Manual Tacoma Community College Last update 06/03/2013 This page left intentionally blank Table of Contents Table of Contents i Laboratory 1: Principles of the Scientific Method 4 In-Lab Report Sheet 12 This page has been left intentionally blank 27 Laboratory 2: Scientific Methodology & Enzyme Activity 28 In-Lab Report Sheet 28 Objectives 33 Introduction 33 Parts of the Swift M5 Microscope 33
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Bentley Chapter 14 Study Guide: The Resurgence of Empire in East Asia Eyewitness: Xuangzang: A Young Monk Hits the Road (p. 281-282) 1. Who was Xuangzang‚ what was the purpose of his travels‚ and what was the impact of his travels? The Restoration of Centralized Imperial Rule in China The Sui Dynasty: Establishment of the Dynasty (p. 282) 2. How were the Sui rulers similar to the Qin dynasty? Give examples of what Sui rulers did. The Sui Dynasty: The Grand Canal (p. 282-283)
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Digestion Lab Abstract – The purpose of this lab was to understand how different solutions played a role in the digestion protein. By looking at different variables‚ such as temperature‚ and pH we’re capable of understanding just how certain substances functioned and when they didn’t. The data for all labs are clear and concise and give a clear understanding of what solutions work best. All three labs were placed in a warm water bath set at 37’C to stimulate the reaction as if it were taking place
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(aq) NH3+ + H+ + Cl- →NH4+ + Cl- NH3+ + H+ → NH4+ H+ + OH- → H2O (l) ∆H= -54.0 kJ/mol NH4++ OH- → NH3+ + H2O (l) (x-1) ∆H=-4.09 kJ/mol (x-1) -54.0+4.09=-49.9 NH3+ + H+ → NH4+ =- 49.9 kJ /mol (-49.9- -26.2)/-49.9 x 100 =47.3% Lab Questions: Pre: 1. The change in thermal content in a reaction 2. The amount of energy needed to change one gram of a substance 1 degree C 3. (50 mL)(1.02 g/mL)(4.18 J/g C)(25.3-21.4) = 830 J 4. 830J+8.20J/g C(25.3-21.4)= 860J 5. .25L(.6mol/1L)+
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Solvent/Water Trap Diagram Rodney Atwaters Halle Bair May 28‚ 2013 Chemistry 36100 Introduction The purpose of this lab was to produce benzoic acid by mixing sodium benzoate with hydrochloric acid. The Hydrochloric acid used in the experiment was a stock solution made by mixing HCl Acid and deionized water. HCl acid‚ historically called‚ muriatic acid or spirits of salt‚ hydrochloric acid is produced from sulfuric acid and common salt‚ NaCl (Princeton.edu). Since the early 1900 ’s‚ sodium
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document to report your findings from the EvolutionLab Exploration Experiment. The lab report consists of three sections: Data‚ Exploration‚ and Lab Summary. Data: copy any data‚ graphs‚ charts‚ or notes that you have saved in your EvolutionLab online notebook into this section. Exploration: Answer the questions. The questions in the Exploration section are the same questions in your EvolutionLab instructions. Lab Summary: Write a 100- to 200-word summary. Data To copy your data from your
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