Mixture Melting Points Abstraction Determining the melting point is very significant in order to identify an unknown. In this experiment‚ measuring the melting point was done by using melting point apparatus. The melting point of the unknown sample #10 was 111.5˚C. There were two possible compounds which were dibenzoyl ethylene and o-Toluic acid because their melting points were 111.2˚C and 109.8˚C when each compound was mixed with the unknown. Therefore‚ the unknown #10 was dibenzoyl ethylene
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REPORTIntroductionWater is a liquid that freezes and also melts at 32*F (0*C). Melting and freezing points are temperatures when a solid substance turns to a liquid. Liquid is a substance that flows to fit its container.Water Water is a liquid that is odorless‚ colorless‚ and tasteless. Water freezes and melts at 32*F (0*C). As water freezes it expands by one-eleventh. The amount of pressure on the water when it is freezing changes the melting point. Water that reaches 40*F it is at its maximum density. The
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Our Iceberg Is Melting is written by John Kotter‚ the leadership and change guru at Harvard Business School and Holger Rathgeber‚ the modern global manager from Frankfurt‚ Germany. The main topic and the author’s purpose in writing the book are to make successful change through the eight step process. The type of the book is management book that can use by people in every level such as manager in one organization‚ high school student‚ executives‚ retirees and others in order to better achieve what
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Introduction The melting point is defined as the temperature at which the solid is in equilibrium with its liquid‚ and this characteristic is very unique‚ so a substance can be determined by the melting point. Determination of the melting point is very important technique in many areas of chemistry especially‚ in organic chemistry area because the melting point is really significant in order to identify the purity and the identity of a substance. Measuring the melting point is a fast and cost-effective
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Lab/ Chem 234 02/17/13 Lab 2: Melting Points Purpose: To determine the purity of a substance using melting point as physical property. We must also learn how to identify an unknown compound using its melting point. We got to identify an unknown compound using mixture melting point and finally we must learn to obtain an accurate melting point using Mel-Temp apparatus. Procedure: Set voltage to obtain the desired heating rate at the anticipated melting point range. The voltage control controls
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Study of Gold metal Date: 14/01/2013 Submitted to: Dr Sami Habib Submitted by: Jamil Mahfoud (A1010659) I- General introduction about metals: a- Historical background Back to 6000 BC‚ process metallurgy is known as one of the oldest applied sciences. Despite that the form of metals was very basic but it has a big impact on the society because of its wide uses especially as tools for agriculture or hunting and even as artistic styles later on. There are 86 known metals so far that were
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blend into a new‚ virtuous community. The exact term "The Melting Pot" came into general usage in 1908‚ after the premiere of the play “The Melting Pot” by Israel Zangwill. The melting pot is a theory used to describe the American society in its first years. In the very beginning‚ the settlers in the “New World” had to create a totally new nation from many different origins and the proximate result of this situation was the birth of the melting pot theory. The idea behind it is that every immigrant
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The managerial function of staffing involves manning the organization structure through proper and effective selection‚ appraisal and development of the personnel’s to fill the roles assigned to the employers/workforce. Definition Staffing: The selection and training of individuals for specific job functions‚ and charging them with the associated responsibilities. Staffing is the process by which an organisation creates a pool of applicants and makes a choice from that pool to provide the right
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MATERIALS : METALS AND NON-METALS Y Iron Coal ou are familiar with a number of materials like iron‚ aluminium‚ copper‚ etc. Some materials have been given in Table 4.1. Table 4.1 : Appearance and Hardness of materials Object /Material Appearance Hardness (Shiny/Dull) (Very hard/ Not very hard) similar change if we try to beat a wood log ? Let us find out. Activity 4.1 Take a small iron nail‚ a coal piece‚ a piece of thick aluminium wire and a pencil lead. Beat the iron nail with
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The Melting Pot 1. Why has it been so difficult for Hmong refugees to adjust to life in the United States? It has been so difficult for Hmong refugees to adjust to life in the United States because lifestyle was very different from theirs. They didn’t know a telephone‚ an air conditioner‚ a light switch‚ etc. even existed. They wanted to keep their traditions‚ their culture. They were empty about new ideas and new experiences. This means that they were full of the past. Also‚ because they
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