into the first main point of the body. A connective is not required here but may be used if desired. For information on connectives‚ review pages 177-178 of your textbook. Skip a space above and below connectives.) BODY I. A single complete sentence expressing the main point of this section of the speech A. Sub point [As with main points‚ sub points should be written in full sentences.] 1. Sub-sub point [Write sub-sub points in full sentences.] 2. Sub-sub point B. Sub point moving from the introduction
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Spectroscopy‚ Boiling point and Melting point. Introduction: - Infrared spectroscopy has also made a break though in medicine. It used to evaluate the kidney stone diseases thus broadening the use of IR in different ways. The purpose of this lab experiment is to identify the unknown solutions using the Infrared Spectroscopy (IR)‚ boiling point‚ and melting point (1). The IR helps to determine the compounds such as a functional group. In order to analyze the compound‚ IR and melting point work the best
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“cut-throat” competition. Automation of one’s point of sale and inventory system puts you a step ahead in the game. It helps you conduct business transactions with ease as you only have to press a few keys. It liberates you from countless paper works as computation of the day’s sale and keeping track of inventory are done automatically. With these things in mind‚ the proponents hopes that upon completion of this Proposed Point of Sale and Inventory System‚ will find it of great
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BOILING POINT G1 Decreases going down. Because metal bonds get weaker. Less energy is required this metallic bonding. BOILING POINT G 17‚18 Increases. Because the atomic size incrases. The molecules are attracted by intermolecular forces. Going down the group‚ the intermolecular forces increases. More energy is needed to overcome these stronger forces. DENSITY Because mass increases faster than volume. REACTIVITY OF GROUP 1 The number of occupied shells increases. The atomic size increases
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5. Calculated mass of the sinker in ounces 1.74g Part C 1. Length of the foil 8.5cm 2. Width of the foil 8.5cm 3. Mass of the foil .60g 4. Volume of the foil .222 5. Thickness of the foil .0031 Part D 1. Boiling point of the ethanol 65ºc Part E 1. T¹ initial temperature 125ºc 2. T² final temperature 155ºc Post lab questions: 1. Based on my temperature value and my lab measurements‚ I calculated that the water density would be 2.16 (g/mL). This
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liquid in question is composed of compounds that differ in volatility such that their boiling points differ by at least 40 to 50 degrees Celsius. Because the very essence of simple distillation is relies upon the idea that more volatile compounds have lower boiling points and thus when heated to this boiling point will occupy most if not all of the vapor above the liquid pot residue. Because the difference in boiling point for the compounds in a mixed liquid must at least differ by 40 to 50 degrees Celsius
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Sample Lab Report for CHM 152 Name Lab Partner(s) Abstract: The physical properties‚ including the boiling point‚ density‚ and refractive index were measured for unknown liquid #16. The infrared (IR) spectrum of the compound was also taken. Based on the data collected‚ it was determined that the compound was likely to be salicylaldehyde. Introduction The purpose of this experiment was to determine the identity of an unknown organic liquid by measuring some of its physical
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distillation and gas chromatography based on their difference in boiling points. The boiling point of hexane is 69 degrees Celsius and the boiling point of toluene is 110 degrees Celsius. Three fractions were collected for both simple and fractional distillation. The first fraction was hexane since it had the lower boiling point. The second fraction was a mixture of toluene and hexane. The third fraction was toluene since it had the high boiling point of 110 degrees Celsius. Gas chromatography was also preformed
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Simple distillation was done to separate ethyl acetate—which has a usual boiling point of 77º—from a less volatile component‚ while fractional distillation was done to distinguish an ethyl acetate/n-butyl acetate mixture‚ which has boiling points of 77º and 125 º‚ respectively. Results and Discussion As previously stated the standard boiling point for ethyl acetate is 77º. The data obtained resulted with the experimental boiling point being approximately 73º—which falls short of the standard value.
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Liquids & Solids Pre Lab Questions: 3pts 1. What are the learning goals of this lab? The learning goal of this experiment is to view and experience the melting point and boiling point of different substances. 2. Why is acetamide not allowed in contact with your skin? What precautions does one have to take to work with this chemical? Acetamide is a carcinogen‚ which can cause cancer. Therefore‚ it should not be allowed to come in contact with a person’s skin. Any person working with this chemical
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