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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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)+.25L(.L/1mol)= 0.3mol AB 830J/.3mol(1kJ/1000J)= 2.7 kj/mol Post 1. Calorimetry is the measure of heat flow. Heat
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Centralia No. 5 PAD 500- Modern Public Administration April 23‚2014 On March 25‚ 1947‚ a deadly coal mine explosion rocked the calm‚ peaceful town of Centralia‚ IL. During World War II‚ this mine provided coal to the war effort. A charge ignited built up coal dust and caused the explosion. This explosion should have surprised no one. Many public sector safety professionals from state and federal agencies knew of the hazards as a result of inspections‚ union complaints and
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Lab: Cellular Respiration in Yeast Lab Report Form Your Name: Katlin Moore “What do you think? – What do you know?” Questions: In this lab‚ we will investigate the effect of sucrose concentration on the rate of cellular respiration in yeast. Under specific conditions‚ yeast will convert sucrose into glucose and then use this glucose in cellular respiration. Yeasts have been used by humans in the development of civilization for millennia. What is yeast? How have humans used yeasts?
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February 25‚ 2013 Lab: Equilibrium of Forces Purpose/Objective: The objective of this lab was to test the first condition of equilibrium for a set of concurrent coplanar forces‚ prove Lami’s Theorem‚ and to determine an unknown mass using rules of equilibrium. Procedure: In the lab‚ we wanted to find at what angles three separate weights would create a net zero force on a force table so that the ring holding the weights was exactly centered in the middle
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Best English 099 10/7/13 IPhone 5 In today’s world‚ technology is constantly changing from a new paperclip to an improvement in hospital machinery. Technology lets people improve the way they live so they can gain their own personal energy. Every year it seems like apple comes out with a bigger and better iPhone‚ like the iPhone 5. It is forcing people to be “in with the new and out with the old.” People from all over the world; are saying that the iPhone 5 is a “must have.” Personally I’m in
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Michael Castelli Keegan Bauman Potato Lab Dr. Peano Block 1 Introduction: Potatoes are just your average food; they have been around for as long as the human race can remember. In this lab we will make them be a prime example of osmosis‚ which is a transport mechanism. In this lab the problem being tested was what environment affects the mass of the potatoes the most. The independent variable is the environments used salt‚ water and iodine solution. The dependent variable is the mass of
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According to Barbour and Wright‚ Congress Quiz 5 1. According to Barbour and Wright‚ Congress A. is rarely able to override a presidential veto. B. overrides a presidential veto about half of the time. C. overrides a majority of presidential vetoes. D. has not overridden a veto in the past fifteen years. E. does not override presidential vetoes because Congress members do not feel it is worth their time. 2. Barbour and Wright contend that the president’s public approval rating tends to be affected
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Project 5 – Project Plan This document provides an overview for all the case studies presented in this project‚ and outline deliverables that are required‚ with an initial schedule. Project Title Triple Cases Team Name Group 13 Team Members Chenglin Fan Feng Zhu (PM) Josh Merritt Rohit Ahuja Shuo Huang Yi Ge Zamil Abuzayd Supervisor Sandra Cowan Table of Contents Scope........................................................................................... 3 Introduction...........
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Assessment Worksheet 111 LAB #7 – ASSESSMENT WORKSHEET Relate Windows Encryption and Hashing to Confidentiality and Integrity Overview This lab demonstrated how hashing tools can be used to ensure message and file transfer integrity and how encryption can be used to maximize confidentiality. Common hashing and encryption tools‚ including MD5‚ SHA1‚ and GnuPG‚ were used. You used GnuPG to generate both a public and private key and a secret key for encryption only. Lab Assessment Questions &
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