used to measure temperature. The extremely fine tube (narrow bore) of a thermometer is called a capillary. The boiling point of water (or condensing point of steam) is 100oC or 212oF or 373 K. The freezing point of water (or melting point of ice) is 0oC or 32oF or 273 K. These temperatures are typically used in the calibration of thermometers and are known as the fixed points. The temperature range that is typically marked on a laboratory thermometer is −10oC to 110oC. Thermometric liquids are
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container’s ice has been half melted. To keep this experiment valid I will keep the amount of ice‚ the time‚ and the amount of materials the same. In my experiment I will test to see what materials will change the ice to its freezing point depression state where it will be melting and there will be ice surrounded by water it just melted off. A few more scientific concepts that relate to this are the Freezing
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advantages of the one pierce mold casting include simplicity‚ low cost‚ and no seam lines in finished patterns. As with all manufacturing methods there some disadvantages to casting that include it can only be used with non-ferrous metals that has low melting temperature and long cooling time. As for the material used which consisted of a silicone mold making rubber and a special chemical composition (catalyst) with a usage ratio of 10 to 1. The calculate amount used for the silicone rubber was 918 g
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LECTERUR : EXPERIMENT 4 DETERMINING MOLECULE WEIGHT BY FREEZING POINT DEPRESSION METHOD STUDENT NAME : ID : LAB PARTNERS | | INTRODUCTION According to Anne‚ n.d‚ the freezing point of a liquid is decreased by adding to another compound to it. This is known as freezing point depression. The pure solvent will have higher freezing point than the solution. Colligative property of matter can explain more about freezing point depression. Whereas‚ colligative properties depends on the number
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CHEM 3411‚ Fall 2010 Solution Set 5 In this solution set‚ an underline is used to show the last significant digit of numbers. For instance in x = 2.51693 the 2‚5‚1‚ and 6 are all significant. Digits to the right of the underlined digit‚ the 9 & 3 in the example‚ are not significant and would be rounded off at the end of calculations. Carrying these extra digits for intermediate values in calculations reduces rounding errors and ensures we get the same answer regardless of the order of arithmetic
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grey cast iron gives the material good resistance to wear and also provides good corrosion resistance and lubrication characteristics which gives it exceptional machinability. The Carbon also provides good strength and toughness and has a high melting point which allows it to handle more heat under intense driving conditions. The composition of the grey cast iron is 3.5% carbon‚ 2.5% silicon and .65% manganese. Cast Iron engine blocks are still very common to this day in larger vehicles such as trucks
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This paper is a full determination for certain chemicals and their boiling points. It lists some already but given the atomic numbers of any material this project includes a conversion and calculation chart to find the freezing point of most any material. GOOD LUCK! Abstract: In this lab we determined the freezing point‚ and Kf‚ of pure 2‚4‚dichloralbenzne as well as a 2‚4‚dichloralbenzne/biphenyl solution. We used this information to determine the molar mass of an unknown (#24) by the 3rd step
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References: Anon.‚ 2009. Lead or Tin Phase diagrams. [Online] Available at: http://www.sanjose.edu/labnotes/tech25 [Accessed 09 April 2013]. Bunnelle‚ W. H.‚ Meyer‚ L. A. & Glaser‚ R. E.‚ n.d. Recrystallization and Melting Point Determination. [Online] Available at: www.chem.missouri.edu/.../Recrystallization%20notes.doc [Accessed 09 April 2013]. Garland‚ C. W.‚ Nibler‚ J. W. & Shoemaker‚ D. P.‚ 2003. Experiments in Physical Chemistry. 7th Edition ed. New York: McGraw-Hill
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The earth has not always looked the way it looks today. In other words‚ the United States one billion years ago was in a totally different location than it is today!! How does this happen? And why does this happen? Let’s take a look. In order for us to get some understanding of how the earth has changed over time‚ we first need to understand some of the things that took place‚ and are still taking place‚ in the earth. What about the internal structure of the Earth? Our best clues about the interior
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Body: Each of your supporting points in your defense will need a paragraph. State your point as a way of creating a topic sentence for an evidence paragraph. You’ll need at least three and probably no more than five. Each evidence paragraph should have specific support by way of facts‚ statistics‚ examples‚ or other details. You may use personal example as some of your supporting detail‚ but try to use more objective support as well. Body: Each of your supporting points in your defense will need a
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