could this experiment have been done in a different order? forexample, fe filing being rerelocated at the end of the system. Why orWhy not?

Here is the procedure:


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INTRODUCTION Most of the matter approximately us con combination of 2 or even more Mixtures have actually the following fundamental proper natter around us consists of mixtures of different substances. A mixture outcomes from the tivo or more pure substances, elements or compounds that perform not react chemically. • Each component of a . Mixtures have the right to be separated into mponent of a mixture retain its chemical identity and also therefore its own properties. can be separated right into these components by physical implies. . Complace of a mix position of a mixture might vary while that of its components is fixed. products in our everyday life, such as rocks, soil, seawater, cement, wood, are examples homogeneous and heterogeneous. This experiment faces the components of a heterogeneous mixture and also not via their identification. Physical favor magnetic home, solubility and so on. will be used in the separation methods. Many prevalent products in our dat of mixtures. Mixtures can be homogeneous and also heterogeneo separation of the components of a heterogeneous properties choose magnetic residential property, solubilit ods used depfinish upon the differences in physical properties between the components. Methods of separation typically used are: Decantation Separation of a liquid from a solid (sediment) by gently putting the liquid from the solid without disturbing the solid. Filtration Separation of a solid from a liquid by indicates of a porous product, a filter which allows the passage of the liquid but not the solid. Extraction Separation of a component of a mixture by preferentially dissolving it in a perfect solvent while the other components continue to be in an insoluble develop The mixture in this experiment will contain three components: iron filings, salt (NaCl), and also sand (SiO). The flow chart for the separation is offered below: Use a magnet Mixture (Fe filings, NaCl, SiO) - Fe rerelocated weight loss Residue staying Measure Fe content by Residue from extraction (NaCl + SiO) - wet sand also dries to continuous weight Sio, (weigh sand) extract through water heat to dryness NaCl solution - NaCl (weigh salt)
Procedure weigh a clean and dry evaporating dish. Add about 3 to 4 g of the unrecognized mixture to the dish. Weigh the dish containing the sample and calculate the sample weight use a magnet to pick up all the iron filings from the mixture. Weigh the evaporating dish via the contained solid. The loss in weight represents the amount of Fe in the sample mie Add 20 ml of water to the solid in the evaporating dish and stir gently for couple of minutes. Weigh a 2nd evaporating dish via a watch glass. Decant the liquid from the initially dish closely right into the second dish. Be cautious not to transfer any kind of solid into the second evaporating dish. Repeat the decantation process for 2 extra trials utilizing 10 ml of water each time. This will encertain the extraction of all soluble NaCl from sand. At this stage of the experiment tright here are 2 evaporating dishes - the first one with wet sand also and the second one through a solution of NaCl and also a watch glass. Place the second evaporating dish via NaCl solution gently on a hotplate and also gradually warmth the solution to evaporate water. Towards the finish, cover the dish with the previously weighed watch glass and also minimize the warm to proccasion spattering. When the NaCl is completely dry water will no more conthick on the watch glass and it also, will certainly be dry. Bring the evaporating dish and also the watch glass back to room temperature and weigh. Calculate the weight of NaCl in the sample. Place the initially evaporating dish via wet sand on a clay triangle on a ring stand also and warmth gently till the sand is absolutely dry. When the sand also is dry, remove the heat and also cool the dish back to room temperature. Weigh the dish with dry sand in it and calculate the amount of sand in the sample.

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Calculate the percent of each component in the sample.