Separation of a Mixture of Solids Step 1: Separating out the Iron Mass of weighing dish: 0.7g Mass of weighing dish and mixture: 5.4g Net mass of the original mixture: 4.7g Mass of 10-cm square paper: 0.8g Mass of 10-cm square paper and iron fillings: 2.0g Net mass of iron filings: 1.2g Step 2: Separating out the Sand Mass of weighing dish: 0.7g Mass of weighing dish and dry sand: 1.7g Net mass of the dry sand: 1.0g Step 3: Separating out the Benzoic acid Mass of cup: 2.3g
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Chemical Earth 1. The living and non-living components of the Earth contain mixtures Construct word and balanced formulae equations of chemical reactions as they are encountered 1. Build a word equation Reactants on left‚ Products on right 2. Convert word equation into chemical formula for the reactants and products Using valency rules 3. Balance the equation Adjust coefficients to get equal numbers of each kind of atom on each side 4. Specify the physical state for each species present
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ELTU2402 Academic Writing I (Term 1‚ 2013) Practice on Paraphrasing and Summarizing (Suggested answers) Essay title: Separating the Sexes‚ Just for the Tough Years Thesis statement: Although some parents and educators oppose same-sex classes‚ there is some evidence that separating boys and girls in middle school yields positive results. A paraphrase Despite the fact that a number of parents and professionals in the field of education oppose single sex education‚ there are signs that
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pinacolone in the experiment at a 15.60% yield. A low percent yield was expected due to the experimental distillation and experimental separation of the two layers. Some pinacolone could have been trapped in the aqueous layer due to experimental error at separating via a pipet. The IR showed peaks at 2967‚ 2906‚ 2871‚ 2359‚ 2337‚ 2173‚ and 1989. The representative peaks in an IR of pinacolene are present between 3000 and 1700. The NMR when manipulated with a multiple of three‚ showed the presence of 9 hydrogens
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and 1700s. Its history has taken a relatively different path from the rest of Canada‚ which has lead to the highly controversial issue of Quebec’s attempt to separate from Canada and become their own country. There are many Quebecers who believe separating from Canada could be extremely beneficial‚ while there are others who believe that Quebec would not last as its own country. For the Quebecers there are many pros and cons for dividing themselves from Canada‚ one of the pros being Quebec having
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Pour the tea solution into a separating funnel. b. Add 20ml of dichloromethane is added to it. (observe separation of the mixture into two layers‚ bottom layer dichloromethane‚ top layer tea due to the fact that it has a lower density ) c. Remove the funnel from the stand and keep your fingers on the stopper and carefully shake the separating funnel. d. Vent the separating funnel periodically (every 30 sec) to relieve vapour pressure created inside
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mixture? Background Research: In this Investigation‚ I will be separating sand‚ salt‚ iron fillings in a mixture and finding their percentages. Iron is a magnetic solid which is incapable of being dissolved in water. Salt is a non-magnetic solid which is capable of being dissolved in water. Sand is a non-magnetic solid which is incapable of being dissolved in water. I used this research to help me complete my experiment. (Separating salt‚ sand and iron) Hypothesis: If the sand‚ salt‚ and iron
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Mindanao. The Philippine Islands are surrounded by large bodies of water. They are bounded on the west by the South China Sea‚ on the north by the Luzon Strait separating the Philippine Islands from Taiwan‚ on the east by the Philippine Sea( and the Pacific Ocean)‚ on the south by the Celebes Sea‚ and on the southwest by the Sulu Sea separating the Philippine Islands from Borneo. Many of the
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MIXTURES‚ SOLUTIONS‚ SUSPENSIONS AND COLLOIDS MIXTURES A mixture is a combination made up of two or more different substances which are mixed but are not chemically bonded. There are also types of mixtures such as homogeneous mixtures and heterogeneous mixtures. SOLUTIONS A solution is defined as a homogeneous mixture composed of a solute; a substance dissolved into another substance known as a solvent. They can also be defined as groups of molecules that are mixed up completely in even
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more clearly. 1. Separating out the Iron: Mass of Weighing Dish: ___0.6_______g (Read all masses to the decimal places allowed by the balance/scale‚ typically one or two decimals‚ i.e. a tenth or a hundredth of a gram.) Mass of Weighing Dish plus Solids Mixture: ____7.5______ g Mass of Solids Mixture: ___6.9_______ g Mass of Weighing Paper: ___0.7______g Mass of Weighing Paper plus Iron: ____2.6______g Mass of Iron: ___1.9_______g 2. Separating out the Sand: Mass
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