into the glassware. We went from a big flask to a small beaker to an even smaller pipette. We used a scale to get the appropriate weight of the water in the different beakers. To test this‚ we weighed multiple glassware and different sized glassware. Then we calculated the precision and accuracy using the precision and accuracy formulas. First we took a 125 mL Erlenmeyer Flask and weighed it empty. We recorded it (77.6 g)‚ then we filled the flask with 100 mL of water. Recorded it (170.5 g)
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and put a 50g weight on the scale and calibrate 2. Measure the weight of conical flask 3. Accurately measure a mass of KH(C8H4O4) near to 5g‚ placing it in a 250ml conical flask 4. Record the reading from the scale‚ subtract the weight of conical flask measured in step 2 5. Dissolve KH(C8H4O4) in a conical flask with minimum volume of distilled water 6. Transfer the solution from the conical flask into Standard Solution 1. Use an electronic balance equal to three decimal
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round-bottom flask (for distillation) and a 10-mL round-bottom flask (for collection) assemble a distillation apparatus 2.) Use an aluminum block to heat and insert a water condenser 3.) The collection flask may be immersed in ice to ensure condensation of the distillate Preparing the Spice 1.) Weigh approximately 1.0 g of your spice or herb onto a piece of weighing paper and record the exact weight 2.) Mix the spice or herb with 12–15 mL of water in the 20-mL round- bottom flask and add a magnetic
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cm3) Distilled Water Volumetric Flask 250cm3 Filter funnel Pipette Burette 50cm3 Retort Stand Beakers 100cm3 Standardized sodium hydroxide solution 0.1M Pipette filter Conical flasks 250cm3 Phenolphthalein Indicator Procedure 1) Rinse the burette with distilled water and then with oxalic acid solution and fill the burette with oxalic acid solution. 2) Rinse the 10.0 cm3 pipette with sodium hydroxide solution‚ and transfer it to a conical flask. 3) Add two drops of phenolphthalein
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concentration of a monobasic acid‚ HX (KA1) Materials and apparatus: 1. Volumetric flask and stopper (250cm3) 2. Electric balance ±0.01 g 3. Pipette and pipette filler (25cm3) 4. Volumetric flask and stopper (100cm3) 5. Burettes (50cm3) 6. Retort stand and clamp 7. White tile 8. Wash bottle filled with distilled water 9. Spatula 10. Titration flasks 11. Glass rod 12. Filter funnel 13
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volumetric flask will be calibrated. Apparatus: Procedure and Equipment: The following equipment is required to complete the lab: One 50.00 mL Buret One 10.00 mL Volumetric Pipet Scale (preferably stainless steel) Pipettes 125 mL Erlenmeyer Flask Safety goggles and glasses Pen and Notebook Distilled Water The following procedure must be entertained in order to complete the lab: Calibration of a 10 mL Volumetric Pipet 1). Weigh a 50 mL Erlenmeyer flask. Make sure
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Starch solution 2%. (3 mL). Safety goggles Apron Digital scale Buret Buret clamp Erlenmeyer flask Pipet bulb Ring stand Ttransfer pipet‚ 5 mL and 25 mL Volumetric flask‚ 100 mL Stopper Wash bottle Distilled water Weigh boat Beakers‚ IV. Procedures: 1) Use the 5 mL transfer pipet and the pipet bulb to measure 5.00 mL of the commercial bleach and drop into a 100 mL volumetric flask. 2) Dilute to the 100 mL mark with distilled water. Put the stopper on and mix well. 3) Weigh out
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reagent can easily react with water‚ all glassware including the 25 ml round bottom flask‚ magnetic stir bar‚ 3 and 5 ml conical vial‚ 50 mL Erlenmeyer flask‚ claisen adapter‚ drying tube and 5 glass pasteur pipets were first added to a 250mL beaker and placed in the oven for 30 minutes. After the completion of the thirty minutes‚ 0.150 g of shiny magnesium turnings and a stir bar was first added to the round bottom flask and the claisen adapter along with the drying tube packed with calcium chloride
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Breaking up is hard to do – Separating Sand & Salt Purpose: The purpose of this experiment is to separate a mixture of sand and salt. Materials: Small beaker Electric balance Sand Salt Water Graduated cylinder Stirring rod Filter paper Flask Rubber policeman Wash bottle Funnel Bunsen burner complete with rubber tubing and a source of gas Hot hands Insulator pad Ring stand complete with a ring Wire gauze Striker Pre-lab Questions: 1. Water will be useful in separating the salt and sand because
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bottle Conical flask‚ 100 cm3 Dropper Volumetric flask‚ 250 cm3 with stopper Funnel Volumetric pipette‚ 25 cm3 Standardized sulfuric acid‚ H2SO4(aq)‚ ~ 0.01 M Pipette filler Window cleaner solution White tile Methyl orange Procedures Part A Preparation of the diluted window cleaner solution 1. Wash the glassware with water and appropriate solutions. 2. Pipette 25 cm3 of the window cleaner solution to a 250 cm3 volumetric flask. 3. Add water to fill
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