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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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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weighed. From the data‚ the formula weight and identity of the unknown metal carbonate is determined. Pre-lab question Mass of crucible + M2CO3 12.627 g Mass of crucible 10.655 g Mass of M2CO3 1.972 g Mass of filter paper + CaCO3 2.436 g Mass of the filter paper 0.598 g Mass of the CaCO3 1.838 g Moles of CaCO3 Mol Molar mass of M2CO3 g/mol Identity of M2CO3 Percent error % 1. From the mass of CaCO3‚ calculate the moles of CaCO3 precipitated. 2. Calculate the molar
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is 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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are expected to be in a trustworthy environment‚ right? But‚ how can we have trust if they don’t trust us to do the right things online? I think public schools need to have more trust in their students and what they do on the internet. I think web filters are absurd and need to be removed for many reasons. In some situations‚ it is hurting our education. I strongly agree that schools block too many websites. There are good reasons why we need them. A school is a place for education‚ not games. Schools
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the mot water after 24 hours. Apparatus/Materials: Three Conical Flasks‚ Three Filter Funnels‚ Cotton Balls‚ Measuring Cylinder‚ Loam Soil‚ 225ml of Water‚ Paper‚ Pencil Methods/Procedures: Obtain and clean out three conical flasks. Label each flask Sand‚ Loam and Clay. Plug three funnels with cotton balls and place one in each flask. Place 20g of each soil in respected filter funnels. Measure and pour 75ml of water into each flask. Record
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The Discussion of this experiment began with discussing how many materials we use today are actually mixtures of pure substances. The separation of these materials into their pure substances can be quite challenging. When we are discussing separations of a mixture that contains pure substances‚ it all depends on whether you can separate the substances by physical means. That means‚ utilizing each substances physical properties such as boiling point‚ melting point‚ and magnetism. Separation of a
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Edger Model FS 55 Trimmer Model FS 45 Trimmer Contents 1. Carburetor with LD Screw (Flange and End Cover Mounting‚ Fixed Jet) 2. Model Update 2.1 Carburetor with 3 Adjusting Screws 2.2 Spacer Flange 2.3 Tensioner‚ Throttle Cable 2.4 Filter Housing (Choke Shutter)‚ Filter Cover 2.5 Ignition Module‚ Crankshaft 2.6 Fuel Tank‚ Hose‚ Retainer 2.7 Clutch (Cup Spring)‚ Washer 2.8 Rewind Starter 2.9 Summary – Series 4232 – Series 4140 – Series 4140 – Series 4140 1. Carburetor with LD Screw (Flange and End
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do this‚ a ring stand must be set up with an iron ring and a glass funnel. Take a piece of filter paper and fold it as demonstrated by Mrs. Montoney‚ and place it in the funnel. 8. Place a 250mL beaker under the funnel for the filtered water. 9. Put the remaining mixture in the funnel. 10. Pour some water in a beaker‚ record the amount of water and pour it in the funnel. The mixture will begin to filter and drain the salt‚ leaving behind the sand. More water may need to be added depending on
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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
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