Ring stand Watch glass Small iron ring Balance Large iron ring with wire gauze Weighing dish Bunsen burner Drying oven or light Beaker tongs 10-ml graduated cylinder Filtering funnel Rinse bottle with deionized water Whatman #1 filter paper 1.8 to 2.2 grams CuSO45H2O 250-ml beaker *10 ml of 6.0 M NaOH solution * For 100 ml of a 6.0 Molar solution of NaOH‚ Using a 100-ml volumetric flask‚ dissolve
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Name: Alfredo del junco Date: 2/22/2014 ET 1410 Final Exam 1. 1. An IC op-amp has ________. a. two inputs and two outputs b. one input and two outputs c. two inputs and one output d. one input and one output 2. In the common mode‚ ________. a. both inputs are grounded b. the outputs are connected together c. an identical signal appears on both inputs d. the output signals are in phase 3. If Av(d) = 3500 and Acm = 0.35‚ the CMMR is ________. a
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a Copper Ore Aim: To determine the percentage of copper present in malachite. Hypothesis: That the percentage of copper in the malachite will be four percent. Materials: 2 x 250mL beaker‚ pestle‚ malachite‚ sulfuric acid‚ water‚ 2 x filter paper‚ funnel‚ filter stand‚ Safety Precautions: Wear safety glasses at all times when dealing with chemicals and apron to avoid ruining clothes. Method: Record the mass of the malachite sample. Place the malachite into the 250mL beaker and add 20-30mL of
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the calculated amount and put it in a small paper cup. Add 25mL distilled water and stir. 5. Pour this solution into the beaker and watch as a precipitate forms instantly. 6. To set up a filtration assembly: a. Set a small paper cup inside a slightly larger coffee cup. b. Fold a sheet of paper in half and then in half again. c. Open one section of the folded filter paper. d. Place the opened filter paper into the funnel‚ and the funnel into the paper cup. 7. Swirl the contents of the beaker
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carbonate from aqueous solutions of calcium chloride and sodium carbonate. These solutions will be prepared from 2.01 g of calcium chloride and 1.06 g of sodium carbonate . Materials: 3 beakers 100 mL graduated cylinder rubber policeman funnel filter paper Procedure: 1. Put on your safety goggles. 2. Obtain two clean beakers. Rinse the inside of the beakers with a small amount of distilled water. 3. Obtain the correct amounts of calcium chloride and sodium carbonate. Enter these masses
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Materials Reagents Collection of hair samples 1. Stainless Steel Scissors 2. Plastic bags 3. Gloves 1. Hot water 2. Ethanol Washing the hair samples 1. Forceps 2. 100 ml beakers 3. Electronic weighing balance 4. Magnetic stirrer 5. Magnets 6. Filter paper 1. Diethyl Ether 2. Acetone 3. Deionised water 4. pH 6 Shampoo Digestion of hair
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| Filter Funnel | X1 | Filter Paper | X1 | Conical Flask | X1 | Electronic Balance | X1 | Sand-Salt Sample | Given Amount | Evaporating Basin | X1 | Bunsen Burner | X1 | Gauze Mat | X1 | Tripod | X1 | Thermometer | X1 | Distilled Water | Given Amount | Method: 1. Record mass of sand-salt sample‚ beaker‚ evaporating basin and filter paper on electronic balance. 2. Add distilled water to sample. Mix thoroughly with stirring rod until salt dissolves. 3. Filter out
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next cut a square sheet of paper and weighed it to find it weighed 1g. I emptied the contents of my dish onto another sheet of paper in a very thin layer. I wrapped the magnet in a sandwich bag and ran it over the mixture to separate the iron. I then carefully pulled the magnet away from the sandwich bag and let the iron fall onto the square piece of paper. I repeated this 3 times to ensure I had all of the iron from my sample. I then weighed the square piece of paper and iron shavings and got a
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the filter paper‚ a value used to determine the mass of the final precipitate‚ (1.01 ± 0.05 g) was found by using the formula (0.97 + 0.99 + 1.06) / 3.00‚ and came out to the value 1.01 g. Mass Taken with Filter Paper | Average mass of Filter Paper | Actual Yield | 12.91 ± 0.01 g | 1.01 ± 0.05 g | 11.90 ± 0.06 g | The actual yield was found by subtracting the average mass of the filter paper (1.01 ± 0.05 g) from the mass value received when the mass of the precipitate in the filter paper
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Decantation. This separates a liquid from an insoluble solid by carefully pouring the liquid from the solid without disturbing the solid. 4. Filtration. This separates a solid from a liquid through the use of a porous material as a filter. Paper is a good filter. Filters allow the liquid to‚ pass through but not the solid. 5. Evaporation. This is the process of heating a mixture in order to drive off a volatile liquid and make the remaining component dry. The mixture that will be separated in
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