and dissolved in 25 ml of deionized water. This solution was then quantitatively transferred to a 250ml volumetric flask. Proper technique is needed for quantitative analysis. This transfer was done to ensure that there was no detectable KCl left in the beaker. After transferring the solution add 3 drops of AgNO3 to the rinsed beaked to check the completeness of the transfer. Now take the volumetric flask and add deionized water till it is 6mm away from the etched mark on the neck of the flask. Place
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expansion describes how the size of an object changes with a change in temperature. Specifically‚ it measures the fractional change in size per degree change in temperature at a constant pressure. Several types of coefficients have been developed: volumetric‚ area‚ and linear. This is used depending on the particular application and which dimensions are considered important. For solids‚ one might only be concerned with the change along a length‚ or over some area. Over small temperature ranges‚ the
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100 mL volumetric flask using a volumetric pipette. The volumetric flask was then filled to the mark with distilled water. The flask was covered with Parafilm and inverted to mix. The next part of the experiment was to determine the Vitamin C in a solution of known concentration. Observations of the Vitamin C sample and the amount found on the label was recorded. A tared piece of weighing paper was used to weigh 0.27 g of Vitamin C. The Vitamin C was then transferred to a clean 50 mL volumetric flask
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starting concentration of 0.0008 mol/‚ how many grams of red 40 I would need. It came out to 0.0397 grams (g). Therefore‚ I first weighed out 0.0397 g of red 40 on the milligram scale. Next‚ I carefully shook out the 0.0397 g of Red 40 into a 100 volumetric flask and added diluted water to the flask until the meniscus was at the 100 mark. Then I placed the cap on the flask and put it upside down and right-side up‚ mixing it completely. I also had to complete the calculations for the next concentrations
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Background & theory: In this experiment‚ the relationship between volumetric flow rate and percentages of valve opening is determined by knowing that volumetric of flow rate of air through the flow meter is proportional to the square root of the differential head across the manometer. Graph of volumetric flow rate (%) vs valve opening (%) can be plotted from the relationship Q α √∆P where in this case becomes Q α √∆h where Q is the volumetric flow rate and √∆h is the square root of the differential height
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the KMnO4 do not react‚ we say they are ‘spectator’ ions and so we will ignore them. Apparatus: * 2 Iron tablets * Pestle & Mortar * 1M Sulphuric acid * 100cm3 Volumetric flask * Weighing scales * Dropping Pipette * Potassium Manganate (VII) – KMnO4 * Burette * 10cm3 Volumetric pipette * Conical Flask * White tile Potassium Manganate (VII) solution Potassium Manganate (VII) solution Iron sulphate solution Iron sulphate solution Method:
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harmful automotive emissions are responsible for anywhere between 50 and 90 percent of air pollution (2) which emphasises the importance of making our motor vehicles as environmentally friendly as possible. This experiment aims to determine the volumetric efficiency characteristics of an everyday petrol engine which should give some insights about how to decrease the fuel consumption of cars and other small vehicles. The experiment also investigates the relationship of the Brake Mean Effective Pressure
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The data gathered and calculated in the experiment accurately portrayed the way the reactions would have taken place. The chloride analysis was a little bit off from other groups due to the fact that our AgCl was in clumps‚ creating less surface area‚ thus our product took longer to burn and may not have burned correctly compared to other groups; yet there are several experimental factors that could have caused us to have different results than other groups‚ i.e. different measurements for samples
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comparison of the accuracy and precision of a graduated cylinder and a pipet EXPERIMENTAL MATERIALS Part A A 50mL graduated cylinder A balance 50.0mL deionized water A rubber policeman Part B A 100mL beaker A 50mL graduated cylinder A volumetric pipet 120.0mL deionized water A thermometer A rubber policeman EXPERIMENTAL METHODS Part A: Density of water 1. An empty‚ dry 50mL graduated cylinder was obtained. 2. The mass of graduated cylinder with using
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1.0 Calibration of Volumetric Glassware 1.1 Introduction: Calibration is the process by which a stated measure such as the volume of a container is checked for accuracy. In general‚ measurements of mass can be determined more precisely and accurately than measurements of volume. Therefore‚ the mass of the liquid contained or dispensed by the glassware will be measured and the corresponding volume calculated using the density of the liquid. However‚ a relatively small change in temperature
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