IB CHEMISTRY LAB REPORT PRACTICAL 13 : HESS’SLAW PRACTICAL ASSESSMENT : DCP‚CE Collecting raw data: Part 1 Weight of magnesium ribbon‚Mg‚m/g (± 0.01) Initial temperature of hydrocloric acid‚HCl‚T/C (± 0.05) Final tmperature of HCl + Mg‚T/C (± 0.05) 0.31 26.00 57.50 Part 2 Weight of magnesium oxide‚MgO‚m/g (± 0.01) Initial temperature of hydrocloric acid‚HCl‚T/C (± 0.05) Final tmperature of HCl + Mg)‚T/C (± 0.05) 0.50 27.50 40.50 Processing
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IB Chemistry - Internal Assessment Lab Format The following titles and subtitles should be used for your lab report and given in this order within your lab report. Use the following sheet as a checklist when writing lab reports. Each lab report may focus on different sections so be sure that you are focusing on the section(s) that the lab is addressing. Introduction A short paragraph explaining to the reader what was performed during the experiment. Include diagrams‚ if appropriate. Design Research
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since both accounts receivable and sales tests show earning’s inflation. Module IV: MUS Sampling- Factory Equipment Additions 1. The objective of performing this test is to test if the factory equipment accounts are materially overstated from the errors found in the capitalization of ordinary repairs. The sampling unit is the debit posting to the factory equipment account and the population is $12‚600‚000 which is the difference between the total debits of $89‚860‚000 and the equipment additions
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(Linear in Parameters) – From observation of equation (2) we can see that the model in the population can be written in the form y = β0 + β1X1 + …+ βkXk + u. In the model β1‚ β2 …βk are the unknown parameters of interest and u is an unobserved random error. log(TCi) = β1+ β2log(Qi) + β3log(pi1) + β4log(pi2) + β5log(pi3) + ui (2) MLR 2 (Random Sampling) – This assumption assumes a random samples of n observations. We deduce that it would be infeasible to collect the entire population of observations
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Determine sample size ▪ Slovin Formula: ▪ n = N__ ▪ 1+NE² ▪ Where: n = sample size ▪ N = population size E = margin of error * desired Example: What should be the representative sample size if the population from which the sample will be taken is 10‚000 and the desired margin of error is 2%? Solution: To determine the sample size‚ use the formula; n = ___N__ 1+NE² n = 10‚000 = 2‚000
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Introduction Peer reporting is an important thing to think about in the health care profession due to the severity of the possible outcomes when something is not reported. If a medication error has occurred‚ it could mean life or death to the patient‚ depending on the situation. Often‚ something worth reporting goes ignored to “keep the peace” at work‚ but could also put patients safety at risk. Another factor if something goes unreported is when a friendship is involved. A dilemma workers face
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measurement is the nominal level. The highest‚ or the level that gives us the most information about the observation‚ is the ratio level of measurement.” (Lind‚ Marchal‚ & Wathen‚ 2003‚page 10) Sampling Error: The difference between a sample statistic and its corresponding parameter is a sampling error. As per Bea Hansen the survey provide by Brian Allen‚ was complete useless because despite the sample size‚ not random and is not a true representation of population. Bea pointed out the valid random
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Usman Omid Chemistry IB 1A Enthalpy Of Solution _Introduction_ AIM The aim of this investigation was to determine the enthalpy of the solution created when dissolving Sodium Hydroxide (NaOH) in water (H2O). THEORY When a solid ionic compound is dissolved in water a change of enthalpy is involved. _The enthalpy of a solution_‚ ΔHsol is the enthalpy change when one mole of the substance is dissolved in water to form aqueous solution. � CHEMICAL Sodium Hydroxide (NaOH) PROCEDURE The recommended
Free Thermodynamics Enthalpy Temperature
Physics Internal Assessment Research Question: Of plywood‚ glass‚ stainless steel‚ and a ceramic tile‚ which least affects the dynamics of a bouncing table tennis ball? Background Information: Table tennis is a ball game that can be played on any reasonably sized‚ flat‚ elevated surface. As is the case in any ball game‚ a crucial criterion to base which material to be used as a playing surface is the bounce of the ball. For any ball game to be fair to both sides‚ the playing surface must be such
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medications are thoroughly observed and followed by nurses then the medications errors are reduced. During the past decade‚ patient safety within health care systems has been publicly scrutinized and critically examined from both human and monetary cost perspectives. “ It is estimated that medical errors are the eighth leading cause of death each year in the United States (Harding et al).” According to this study medication errors are common and have dire consequences‚ nurses very often misread MD orders
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