Chemistry SL Internal Assessment: Enthalpy Change Design Lab Experiment: Reaction of distilled water and solid sodium hydroxide RESEARCH QUESTION How does the heat released during the reaction between distilled water and Group 1 elements (lithium‚ sodium and potassium) vary as one goes down the group? OBJECTIVE The objective of the experiment is to measure the heat change during the reactions with minimal heat loss to the surroundings. MATERIALS The materials to be used in this experiment
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what hosts are on the network and to see what services they are running. 2. What is the relationship between risks‚ threats and vulnerabilities as it pertains to Information Systems Security throughout the seven domains of a typical IT infrastructure? Threats and vulnerabilities lead risks‚ if you don’t have then then you don’t have any risk of anyone getting into your network 3. Which application is used for Step #2 in the hacking process to perform a vulnerability assessment scan? That would
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plate as my sketchpad and my hands as a pencil‚ in order to create wonderful and tasty works of art. I have always enjoyed cooking for guests‚ and by attending this program I will learn the skills I need to turn my passion into a full time career. 2. Attributes that describes me most when it comes to cooking are: cleanliness‚ productivity‚ a quick study‚ and organization. There is always room to improve and acquire more attributes in class‚ and in the field is where I will forge and master them
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oxygen increases so does the number of fish observed. However‚ when the dissolved oxygen reaches 14 ppm the number of fish decreases to 10. So‚ 6ppm and 14ppm‚ 8ppm and 16ppm‚ and finally 10ppm and 18ppm‚ have a similar number of fish observed. 2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water. If the amount of dissolved oxygen is increased‚ then the number of fish observed will increase. 3
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out of 2 points When electricity is passed through molten potassium bromide‚ two simpler substances‚ potassium and bromine‚ are produced. Therefore‚ potassium bromide Selected Answer: has less mass than the resulting potassium and bromine do. Correct Answer: cannot be an element. Question 2 2 out of 2 points Which of the following parts (postulates) of Dalton’s atomic theory has been modified in light of later discoveries? Selected Answer: Atoms
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NETW410 Week 2 Lab Report To complete the Week 2 Lab Report‚ answer the questions below concerning the Network Design Lab Scenario found in Doc Sharing. Please use the template starting on page 2 and submit it to the Week 2 iLab Dropbox by the due date. Have fun while learning. Krystofir Weaver NETW410‚ Ali Dayoub 1/18/13 Lab 2: Application of the Top Down Network Design Methodology Lab Report 1. What are the business goals? (10 points) The business goals are to expand the
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Statistics – Lab Week 2 Name: Math221 Creating Graphs 1. Create a Pie Chart for the variable Car - 2. Create a histogram for the variable Height – 3. Create a stem and leaf chart for the variable Money – Stem-and-Leaf Display: Money Stem-and-leaf of Money N = 20 Leaf Unit = 1.0 9 0 124456667 (3) 1 249 8 2 128 5 3 03 3 4 27 1 5 2 Calculating Descriptive Statistics 4. Calculate descriptive
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CHEMISTRY Guess Paper – 2013 Class – XI Subject - CHEMISTRY MAX MARKS=90 ……………………………………………………………………………………… General instructions: All questions are compulsory. Marks for each question are indicated against it. Questions number 1to 8 are very short –answer questions‚ carrying 1 mark each. Answer these in one word or about one sentence each. Questions number 9 to18 are short –answer questions‚ carrying 2 marks each. Answer these in about 30 words each. Questions number19 to27
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Chemistry Lab Report on standardization of acid and bases. Purpose: To prepare standardize solution of sodium hydroxide and to determine the concentration of unknown sulfuric acid solution. Data and Calculations: This experiment is divided into two parts (Part A and Part B). In the first part of experiment‚ the standardize solution of sodium hydroxide is prepared by titrating it with base Potassium hydrogen phthalate (KHP). The indicator Phenolphthalein is used to determine that whether titration
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begins at year 3‚So t=2‚t+1=3.and the present value of the annuity =$5000/8%*[1-(1/1+8%)^(25-2)] = $51‚855.29 ! ! ! C5-q11 A:(1)IRR(DF):$-750000+$310000/(1+r)+$430000(1+r)^2+ $330000(1+r)^3=0 r=19.8253% IRR(SR)=$-2100000+$1200000/(1+r)+$760000(1+r)^2+$850000/ (1+r)^3=0 r=17.3641% since r1>r2 project deepwater fishing should be chosen. (2)incremental cash flow: initial investment: -$1350000 year1:$890000 year2:$330000 year3: $520000 IRR : $-1350000+$890000/(1+r)+$330000/(1+r)^2+$520000/(1+r)^3=0 r=15
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