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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measured into a paper cup because that was the measure calculated for Na2CO3 using stoichiometry in the step before. 25 mL of distilled water was added and stirred. Then‚ that solution was poured into the 100 mL beaker and it formed a precipitate (calcium carbonate) instantly with the calcium chloride solution. Next‚ a filteration system was set up: A small cup was placed inside a larger cup for support and a funnel placed in to the small cup. Then‚ a 1.1 gram circle of filter paper was folded in
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or NaOH) in order to initiate the cloudy appearance in solution. Vacuum filtration of the NaOH extract (organic acid) produced a shiny white crystalline product collected in the filter paper. Likewise‚ vacuum filtration of the HCl extract (organic base) produced a dull white crystalline product collected in the filter paper‚ which was comparable to powdered chalk. After the ether evaporated‚ the neutral extract remained in the bottom of the beaker and was a mixture of white and slightly tinted green
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BASIC SEPARATION TECHNIQUES Contemporary modifications of filtration and dialysis use a matrix-based fibrous material that provides a mechanism of separation in many homogeneous immunoassays. These materials may be coated with specific antibody-ligand to foster selection of specific materials or species. Certain labels use magnetic particles in conjunction with strong magnets to effect separation. Basic universally used separation mechanisms‚ outside of those incorporated in immunoassay‚
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the separation of a heterogeneous (not alike‚ different) mixtures‚ by adding a solvent and passing the resulting mixture through a fine mesh or filter. Evaporation of a homogeneous (alike‚ same) mixture will reveal any solid particles which were dissolved in the original mixture. Materials: iron filings sand salt water magnet hot plate filter paper 50 mL & 100 mL beaker funnel tongs Directions: 1. Combine 1 g of iron filings‚ 1 g of salt and 1 g of sand in a petri dish.
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chloride content by gravimetric methods. Purpose: To find the percent of phosphorus in known compound MgNH4PO4*6H2O using gravimetric analysis. Procedure: 1. Weigh by difference to the nearest hundreth gram .75 of your unknown sample‚ using weighing paper. Using solualbe Expert plant food label percentate 30% P2O5. 2. Transfer the sample quantitatively to a 250-ml beaker and record the sample mass. 3. Add 18 ml of distilled water and stir the misture with a glass stirring rod to dissolve the sample
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was filtrated to use for further analysis. Stripes of this solution were put on a filter paper and later‚ after dried placed into a beacon of solvent. After this the chloroplast pigments were separated by the solvent into groups of more or less soluble pigments. Aim How many pigment types are present in a green leaf? It is hoped to be able to identify the four different pigments types of a leaf. As the filter paper with the solvent will separate the pigments in terms of solubility‚ a clear segmentation
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Section A. Aims and Objectives This experiment is conducted in order to investigate which fruit‚ kiwi fruit‚ lemon fruit or orange fruit contain more vitamin C. Section B. Identifying variables 1. Independent variable Numbers of dropper of juice Time for the juice the decolorized 2. Dependent variable The concentration of DCPIP solution 3. Controlled variable The concentration of DCPIP solution The amount of fruit juice The temperature The time that the juice expose
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Materials : -Mixtures of sand and salt -Aquades -Filter paper - Filter tunnel -Filtration apparatus -Stirer -Wired gauze -Beaker Procedure : - The beaker‚ evaporating disk‚ filter paper‚ and the mixture is weighted using the provided equipment -Water is then added into the mixture which was in the beaker -The whole mixture that was poured by water is stired -The equipments for filtration was prepared -The mixture was poured to the filter paper and was allowed to be filtered -The sand residue
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this experiment‚ a magnet was used to separate the iron filings from the initial heterogeneous solution Filtration: the isolation technique which is accomplished by filter paper and a funnel. The filter paper is folded twice ramen noodle style and inserted into the funnel. From there‚ the heterogeneous mixture may poured into the filter to isolate the sand and pebbles from the mixture
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