benzoic acid and salt were separated. A filter paper was inserted in the funnel and the cup with the salt and benzoic acid was poured into the funnel. A graduated cylinder with 5mL of water was inserted into the ice bath; this was poured into the funnel to eliminate any of the sodium chloride that may have been missed. The filter paper was laid out on several paper towels to dry. After the filter paper has dried it will be weighed and the weight of the filter paper will be subtracted from the total
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Quantitative Determination of Gravimetric Analysis Ophelia Low Gek Suan 1311907DBT/FT/1A/01 | SYNOPSIS By gravimetric analysis‚ we are able to determine the amount of sulphate in barium sulphate quantitatively. We can do so by slowly adding dilute barium sulphate to an unknown sulphate solution that has been heated and acidified with concentrated hydrochloric acid slightly. A white precipitate will be yield from filtering the solution
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Paper Cone Investigation Lisa Han 10MF Design Research Question: This investigation will determine how the sector sizes of the piece of the filter paper affect the terminal velocity for the cone to fall. The following will be kept constant meter ruler‚ stopwatch‚ and filter paper. Hypothesis: ‘If the sector size is the increase‚ then the terminal velocity will decrease.’ The reason is that if the sector size is bigger‚ the surface area of the cone will become smaller. If the surface area
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of a Precipitation Reaction NOTE: All photos should be taken so the reading on the electronic balance is readable. Photo 1: filter paper being weighed on electronic balance‚ along with your student information card. Photo 2: beaker with precipitate slurry in it (after step 5) ‚ along with your student information card Photo 3: dried precipitate/filter paper being weighed on electronic balance‚ along with your student information card Additional Question Guidelines: Include the
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Purposes of Experiment: To synthesize a transition metal complex‚ potassium tris (oxalate)ferrate(III) trihydrate in a two step process‚ to learn new laboratory techniques such as decantation‚ recrystallization‚ gravity and suction filtration. Also the purpose of the experiment is to determine the actual‚ theoretical‚ and percent yields of product‚ and characterize the final compound by determining the number of waters of hydration by gravimetric analysis List of Observations: After adding
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of DCM the Panacetin lumps were crushed with a stirring rod. Next a fluted filter paper was pre-weighed. The filter paper weighed around .860 g. Gravity filtration was then used to filter the mixture into a 125 mL collecting flask. The mixture was filtered in order to separate the crude sucrose from the mixture. The original container was then rinsed through the filter paper again with 5 mL of DCM and the mass of filter paper containing sucrose was measured after it was dry. The last step was to
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` CHEMISTRY PROJECT ON PRESENCE OF INSECTICIDES IN FRUITS AND VEGETABLES A PROJECT REPORT Submitted by VAISHAKH MURALEEDHARAN Class: XII-A JANUARY 2015 DEPARTMENT OF CHEMISTRY SHANTINIKETAN INDIAN SCHOOL DOHA-QATAR SHANTINIKETAN INDIAN SCHOOL‚ DOHA – QATAR Affiliated to the Central Board of Secondary Education‚ Delhi. Approved by the Ministry of Education‚ State of Qatar. BONAFIDE CERTIFICATE This is to certify that this project report entitled “CHEMISTRY PROJECT ON” PRESENCE
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SCH 3U0 May 7th 2013 Percent Yield of Calcium Carbonate Introduction: The purpose of this experiment is to examine the percent yield of a precipitate in a double displacement reaction. A solution of calcium citrate and sodium carbonate were mixed together‚ then the products were filtered out as so only the precipitate remained. The filtered paper was then dried and the mass of the precipitate in the experiment divided by the theoretical mass of the precipitate from the calculated gave the
Free Stoichiometry Chemical reaction Sodium
Amount of antioxidants in three green tea samples Aim: To compare the amount of antioxidants in three green tea samples and hence recommend a brand of green tea bag contains a higher antioxidants content to the public. Introduction Problem to investigate: Amount of antioxidants in three green tea samples Hypothesis: It is the antioxidants like catechins‚ a form of flavonoids‚ present in the green tea to cause the DCPIP solution to change from blue to colourless. Prediction: The DCPIP solution
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Addressing Air Pollution Threats with Air Purifier We are already in the year 2013 and like many other fields of technology there also has been significant improvements in the field of pollution prevention. Using an air purifier could address problems of air pollution substantially. With the world growing more and more conscious about environmental issues‚ pollution control is taking driver’s seat among various considerations for home‚ office‚ and workshop owners. Many people are turning towards
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