Introduction The aims of the lab session was to familiarize with the principles‚ operation and application of a light spectrophotometer. This report discusses an experiment to study the relationship of absorbance and concentration‚ the interaction of electromagnetic radiant energy(ERE) and matter which is an important aspect of the Beer-Lambert ’s Law. This law states that the absorption of a compound is directly proportional to the concentration of that particular compound. This is because (a &
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Uncertainty Avoidance He has defined the cultural characteristic of Uncertainty Avoidance as: . . . the extent to which people within a culture are made nervous by situations which they perceive as unstructured‚ unclear‚ or unpredictable‚ situations which they therefore try to avoid by maintaining strict codes of behaviour and a belief in absolute truths. Cultures with a strong uncertainty avoidance are active‚ aggressive‚ emotional‚ compulsive‚ security-seeking‚ and intolerant; cultures with
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50 0.008 0.60 0.006 D 22.6 6.00 0.009 1.50 0.006 0.30 0.008 E 11.4 3.06 0.03* 1.50 0.006 0.30 0.007 F 5.80 1.55 0.02* 1.50 0.006 0.30 0.003 Since the uncertainties can only be written with 1 s.f‚ the number of decimal places cannot be the same as the others. Calculating the average of length‚ width‚ and height and their uncertainties: In order to find the average all the numbers should be added up‚ and then divided by how many numbers there are. Average: (∑X)/N Average length of object
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Separation of the Components of a Mixture General Chemistry 1 (Chem 101)‚ ISP SCUHS Report 2 January 26‚ 2014 Abstract The analyses of mixture were to distinguish and identify homogeneous mixture by using the techniques of decantation and sublimation. By performing these techniques‚ we examined our solutions such as SiO2 (sand)‚ NH4Cl (ammonium chloride)‚ and NaCl (sodium chloride) and mixed H2O (water) with each solution after being heated. After examining our solutions‚ we made calculations
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The lesson is divided into 3 labs that can be completed in any order. After labs have been completed‚ facilitate a class discussion where students summarize and compare findings and relate how their findings support (or refute) Newton’s Laws of Motion LAB 1: How fast can it go? Put one car at the top of the ramp and let it roll down. Use a stopwatch to record the time the car rolled. Use this information to calculate the acceleration of the car. Measure the distance the car rolled using the
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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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of a set of scientific measurements 3. To apply the concept of significant figures in reporting correctly scientific measurements Materials and Equipment Ruler‚ meter stick‚ 10 mL graduated cylinder‚ 50 mL graduated cylinder‚ small and large test tube‚ 50 mL and 150 mL beakers‚ 50 mL Erlenmeyer flask‚ digital top-loading balance‚ unknown liquids for density determination‚ irregular solids for density determination‚ safety glasses‚ Lab manual that was used for measurement. Introduction The
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students that appeared to be healthy and active. Four methods were used to obtain the flexibility measurement of the test subjects. A goniometer was used to find the flexibility measurements of the subjects for the shoulder flexion‚ shoulder extension‚ hip flexion‚ and hip extension tests. Using the joint as the fulcrum‚ the goniometer was aligned with the axis of rotation of the desired flexibility measurement. The immovable arm of the goniometer was aligned next to the non-moving portion of the body
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slope. From this sope‚ find the local acceleration due to gravity. Calculate the percent error using the accepted value 9.803 m/s2. Two measurements are made in this experiment. “L” the length of the string is measured using a meter stick which has a lowest gradation of 0.001m this gives a relative uncertainty of 0.0005m and an estimated absolute uncertainty of 0.005m due to human error measuring from the end of the string to the center of
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mixtures. Indentify an unknown compound using mixture melting points. Introduction Energy is needed to be applied to a solid compound in order to changes its state point of a compound. The actual purpose of the experiment is to determine the measurement and the melting points of the benzoic and mandelic acid and various mixtures of mandalic and benzoic acid‚ and an unknown compound. In addition to that‚ later we will be able to indentify the unknown compound by comparing the melting points with
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