Research Question: Is it possible to separate salt‚ sand and iron filings from each other in a mixture‚ to figure out the percentage of each component in the original 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
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I. Grade Level/Unit Number: 9-12 Unit 7 II: Unit Title: Mole Concept III. Unit Length: 7 days (on a 90 min. per day block schedule) IV. Major Learning Outcomes: Students should be able to: Mole Concept • Calculate formula mass. • Convert representative particles to moles and moles to representative particles. (Representative particles are atoms‚ molecules‚ formula units‚ and ions.) • Convert mass of atoms‚ molecules‚ and compounds to moles and moles of atoms
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Do you know that of every 100 children in the world today‚ 16 of them are child labourers‚ 12 of them are in its worst form‚ and many will never go to school? There are 246 million child labourers in the world today‚ most are in developing countries. Good morning everyone. Today I Sridhar Sahu stands before you to give a speech on child labour. Child labour "CHILD IS THE FATHER OF MAN" the famous lines by William Word worth. It symbolizes the need of children in building a healthy nation and
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mass of 10 un-popped kernels and total mass of 10 popped kernels was approximately 18.83 %‚ which is also the same for the percent change of mass between the 1 un-popped kernel and 1 popped kernel. The reason why there’s a percent change in mass is due to the experiment being done in an open system‚ which is a systematic error. The open system is a systematic error because during the period of time to measure the mass of the popped kernels‚ the escaped steam from the kernel has already evaporated
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Introduction A sand casting or a sand molded casting is a cast part produced by forming a mold from a sand mixture and pouring molten liquid metal into the cavity in the mold. The mold is then cooled until the metal has solidified. In the last stage the casting is separated from the mold. There are six steps in this process: (see sketch below): 1. Place a pattern in sand to create a mold. 2. Incorporate a gating system. 3. Remove the pattern. 4. Fill the mold cavity with molten metal
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Extract Tar Sands Ltd. Background information Extract Tar Sands is an extraction plant company located in Athabasca‚ Alberta. It is a leading extraction plant‚ and one of the worlds most global industries. Large investments are required but the future outcomes are unknown. Athabasca has the largest reservoir of crude bitumen in the world. The tar sands go through a refining process to separate the bitumen (black viscous oil) from the mixture of clay‚ sand and water. Extracting oil from tar sand is much
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of Saxony. 2008: First seizure of MDPV in the United States. 2009: MDPV became illegal in Denmark. 2010: MDPV made a controlled drug in the UK‚ Sweden‚ Germany‚ Australia and Finland. First reports of the widespread retail marketing of ’bath salts’ containing MDPV in the U.S. The US recognizes both Mephedrone (July‚ 2010) and MDPV (December‚ 2010) "a drug and chemical of concern". 2011: MDPV sale and possession are banned in Alabama‚ Arkansas‚ Delaware‚ Florida‚ Georgia‚ Hawaii‚ Idaho‚ Kansas
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written in C‚ has a kernel programming interface‚ can support many users 3. What are multiuser systems? Why are they successful? A multiuser system is a system designed for multiple user input and output. 4. What is the Free Software Foundation/GNU? What is Linux? Which parts of the Linux operating system did each provide? Who else has helped build and refine this operating system? Organizational sponsor of the GNU Project. Linux is the name of the operating system kernel developed by Linus Torvalds
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Robert Lawrence and Edmund Stephens‚ two graduate students of geology from Columbia University‚ organized the Saline Salt Company in 1974. Keeping in mind the fact that every 1‚000 grams of seawater contains approximately 35 grams of various salts‚ the two men pictured limitless wealth for them by extracting these salts. Common table salt comprises 27 grams out of each 35 grams and is easy to extract; so‚ the men decided to begin producing it. They picked New Iberia‚ Louisiana as the ideal location
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1. What importance have the following groups attached to salt? i. Romans: Romans considered “common salt” a right and used it for cooking in both plebian and patrician cuisine. Salt trade was a prominent way of making money and soldiers were often paid in salt. A tightly controlled monopoly on salt contributed to military funds. ii. Greek Philosophers: Plato describes salt as dear to the gods‚ and we can even see the importance attached to it in religious ceremonies‚ covenants‚ and magical charms
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