To make a standard solution Apparatus: Volumetric flask Method: 1) 2.4g to 2.5g of sulphamic acid was weighed out‚ firstly by weighing the container and the sulphamic acid together‚ then pouring the sulphamic acid into a beaker. The container was then weighed again and the initial weight and the weight of the container alone were subtracted from one another to provide the mass of the sulphamic acid. 2) The sulphamic acid was then dissolved in 50cm³ of distilled water‚ using a glass
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burette may have increased the chances of gaining more accurate results. This is because the piston burette delivers precision bore and plunger. White tile: The tile was used to be able to observe the colour change of the solution in the conical flask better. By placing the white tile it allowed us to see the colour change more easily and quickly therefore increasing our chances of closing the burette tap on time and giving us closer and possibly more accurate results. If non clear paper was used
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Beer’s Law Lab Hanna Beeter March 15‚ 2013 Honors Chemistry Introduction: In Beer’s law lab the purpose was to find the unknown concentration. The lab included the use of a volumetric flask‚ pipette‚ and spectrophotometer. The spectrophotometer played the biggest part in finding the concentration of the unknown. A spectrophotometer is an apparatus for measuring the intensity of light in a part of the spectrum‚ and is transmitted or emitted on a particular substance. After the number retrieved
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method of separation‚ to assemble and use a simple distillation setup in the separation volatile substances from non-volatile materials‚ to determine the boiling pint of a liquid sample and to isolate caffeine from tea and gain experience in chemical laboratory manipulation of plant materials. II Materials and Methods The materials used in this experiment are the following: * * 10 pieces of tea bags(20 g) * 175 distilled water * 30 mL Chloroform (2 sets of 30 mL) * 12.5g Sodium
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Materials required: pipette filler‚ volumetric flasks(2-4)‚ beakers(2)‚small white piece of paper‚ indicator( 2 drops)‚ conical flask‚ clamp‚ soap‚ eye protection‚ burette‚ distilled water‚ cleaning utensils‚ stand‚ funnel‚ solutions( NaOH and KHP) Procedure: 1. Gathered all materials required 2. Wore proper safety equipment 3. All the equipment was washed and gathered. 4. The base (NaOH) and the acid (KHP) were labeled and put into conical flasks and beakers. 5. A rod was screwed into the hole
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temperature of 80 °C for a period of 22 hours. Once the BPO is filtered‚ the spent adsorbent is collected for regeneration. Soxhlet extraction for adsorbent regeneration Two boiling chips are added into the flat bottom flask and weighed. Then‚ hexane is poured into the flat bottom flask until it is half full. Teflon tape is applied on the bottom end of siphon and condenser before fitting the apparatus. This is to prevent the released of hexane gas during the experiment. The wrapped adsorbent is then
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solution into a filter funnel and filter paper over a second conical flask. Pour 100.00mL of saturated Ca (OH)₂ solution into a beaker and pour the solution through the filter paper by flowing the solution through a glass rod. After that‚ use a thermometer to measure the temperature of the solution obtained in the conical flask. Fill 29.00mL of HCL in the burette. Use a pipette to transfer 10.00mL portion of the solution into a conical flask and drop 5 drops of methyl orange into it by using a dropper.
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5. The stop cork was closed‚ shaked and again vented. The mixture was held stand to allow the layers to separate. 6. The top layer was the ether layer and the bottom layer was the aqueous layer. 7. The aqueous layer was drained into an erlenmeyer flask
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Macbeth and ‘The Laboratory’? In this essay I will be writing about female power in Macbeth and ‘The Laboratory’. I will be analyzing them both to show the similarities and differences between the two pieces. Both include a strong‚ crafty and dominant female character and Shakespeare and Browning explore these characters fully and in great detail. Both the speaker in ‘The Laboratory’ and Lady Macbeth strive to maintain their innocent images. The speaker in ‘The Laboratory’ wants to kill
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to volume: Actual Volume = grams of water × volume of 1 g of H2O 2) Calibration of a volumetric flask (100ml) (a) Get a 100 ml volumetric flask. Make sure the flask is clean and dry. Weigh the flask to the flask to the nearest milligram. (b) Fill the flask to the mark with distilled water and weigh again. (c) Calculate the mass of mass of water contained in the flask (d) Convert the mass of the water to volume 3) Calibration of a measuring cylinder (50ml)
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