g | Mass of M2CO3 | 2.031 g | Mass of Filter Paper | 0.969 g | Mass of CaCO3 | 1.5782 g | Moles of CaCO3 | 0.01577 moles | Molar Mass of M2CO3 | 128.79 g/mol | Identity of M2CO3 | K2CO3 (potassium carbonate) | Percent error | 6.8% | Calculations and Graphs: Mass of M2CO3 Mass of Crucible and M2CO3 minus Mass of Crucible = mass of M2CO3 27.752 g – 25.721 g = 2.031 g Mass of CaCO3 Mass of Filter Paper and CaCO3 minus Mass of Filter Paper = Mass of CaCO3 2.551 g – 0.969 g
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Quantitative Separation of a Mixture Lab Pre-Lab Questions: 1. Define the following: Physical Change Heterogeneous Mixture Sublimation Filtrate Residue 2. List two physical separation methods. 3. List the formula for determining percent composition by mass. Objectives: 1. to separate a three component mixture and 2. determine the percent composition by mass of each component in the mixture. Materials: Ammonium chloride (NH4Cl)‚ Sodium chloride (NaCl also known as
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THE GRAVIMETRIC DETERMINATION OF SULFATE Learning Goals. 1. To determine the amount of Sulfate in an Unknown sulphate sample. 2. To perform and develop skills in precipitation Gravimetric method of quantitative analysis. DISCUSSION: Gravimetric analysis is one of the oldest analytical techniques and for this reason is referred to as a "classical method." Gravimetric procedures are usually very accurate‚ but more tedious than other methods. The only major equipment needed
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approximately 150ml of 2 M NH3(aq) while stirring. A white precipitate of MgNH4PO4*6H20will form. Allow the mixture to sit at room temperature for 15 minutes to complete the precipitation. 6. Collect the precipitate on a preweighed piece of filter paper. 7.Obtain a filter paper and fit it into the glass funnel. Wet the paper with
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Abstract Gravimetric analysis describes the methods for finding the chemical constituent of analyte in a solution through analytical chemistry. This method uses the mass of solid SO42-‚ with an unknown quantity and quality‚ to qualitatively determine the makeup of the solid SO3-. Two separate experiments with the initial compounds of BaCl2 and SO42- were put into solution to allow for the BaSO4 precipitate to form. Through filtration and ignition of precipitate containing ashless papers
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1.) How does the use of fluted filter paper hasten filtration? Why is it advisable to place a small piece of wire between the funnel and the mouth of the flask during hot filtration? The way the fluted filter paper is folded hastens filtration because it increases the surface area of the filter paper‚ giving the solution more area to go through. A piece of wire is placed to avoid build-up of pressure‚ and easily pour the solution without spilling. 2.) Enumerate 2 techniques that can help
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examined for leaks once a year‚ and don’t procrastinate in cases where a call to the repair center is necessary. You can also learn to do your own "repairs" that will help the environment as well. For example‚ check filters on all air conditioners around the house. A dirty filter will require the air conditioner to work harder to cool a room‚ causing you to turn the A/C up and‚ in so doing‚ increasing your energy bill. By checking and cleaning the
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the distorted signal creating a reconstructed signal. The LMS algorithm seeks to minimize the excess mean-square error (MSE) between the echo signal and the estimated echo. The excess MSE refers to the LMS algorithm fluctuations about the adaptive filter coefficients after a large number of iterations [3]. This thesis consists of designing and implementing an echo canceling system. The DSP chip is used to simulate the echo creating system and to implement the adaptive filtering system to cancel
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lubricates moving metal parts that would otherwise grind together. As you drive‚ the oil pump circulates oil within your engine and the oil filter catches the deposits that build up over time. The oil filter performs its own type of car maintenance by keeping the oil clean. But as the oil gets older‚ the number of deposits in the oil continues to build and the filter is unable to extract all of the material. When this happens‚ the color of the oil changes and it indicates the oil should be changed.
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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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