The obtained mass of benzocaine and benzoic acid mixture was measured to be 2.075 grams. Following being dried for a week the mass of benzocaine was recorded to be 0.250 grams‚ and benzoic acid was recorded to be 0.600 grams. The melting point range of benzocaine was measured to be 89.5°C-91.5°C‚ while benzoic acid’s melting point range was measured to be 129°C-131.3°C. The percent mass recovered was calculated to be 40.96% for the experiment. Table 1 illustrates the collected information. Starting
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cylinder and liquid (grams) 30.65 30.62 30.565 Part II: Density of Irregular-Shaped Solid Mass of solid (grams) 39.537 38.515 40.975 Volume of water (milliliters) 50.01 49.9 52.4 Volume of water and solid (milliliters) 54.9 54 57 Part III: Density of Regular-Shaped Solid Mass of solid (grams) 27.7 27.71 26.8 Length of solid (centimeters) 5.26 5 4.5 Width of solid (centimeters) 3 4 3.5 Height of solid (centimeters) 2.5 3 2 Part I: Density of
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dissolve 10 g cane sugar in a mixture of 20 mL glacial acetic acid. Boil mixture for 30 minutes. Add the phenylhydrazine solution through the condenser. Remove from the hot plate. Rinse with 5 mL of 1:1 mixture of water and glacial acetic acid to complete the transfer of phenylhydrazine. When a yellow solid emerges‚ swirl the mixture. Wrap a dry cloth around the flask. Cool to room temperature (preferably overnight). Filter off osazone. Press and drain it. Wash with a cold mixture of 10 mL each of water
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1) Separation of Power in Malaysia - BN Government change the rule Nasri Talking That “cases before the courts were not intervened by any quarters” and that “there were cases where the judgments were not in favour of the executive” do not equate to the doctrine in practice. (Phrases within quotation marks taken from a Bernama news report attributed to Nazri who was speaking during the question-and-answer session in the Dewan Rakyat recently.) Separation of Power has been dead for TWO decade
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A solid argument consists of a claim‚ reasons/evidence and conclusion. “Reasons are beliefs‚ evidence‚ metaphors‚ analogies‚ and other statements offered to support or justify conclusions. When a writer has a conclusion she wants you to accept‚ she must present reasons to persuade you that she is right and show you why. You cannot determine the worth of a conclusion until you identify the reasons” (Browne & Keeley‚ 2012‚ p.28). Absent reasons or conclusion the argument is weak‚ unclear‚ pointless
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pressure. Introduction Molar mass or gram molar mass is the mass of the substance under consideration without distinguishing whether a substance is an element ‚ a molecule or an ionic compound. These elements‚ molecules or ionic compound could be solid gas or liquid. The molar mass of gas or vapor could be measured if the gases obey the law of Ideal Gas . The mass of the gas is found under known temperature and pressure. Method/procedure To measure the unknown volatile liquid molar mass‚ the formal
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Principles of Mass Transferand Separation Processes Binay K. Dutta Universiti Teknologi Petronas Malaysia New Delhi-110001 2009 PRINCIPLES OF MASS TRANSFER AND SEPARATION PROCESSES Binay K. Dutta © 2007 by PHI Learning Private Limited‚ New Delhi. All rights reserved. No part of this book may be reproduced in any form‚ by mimeograph or any other means‚ without permission in writing from the publisher. Cover photo — Courtesy: Haldia Petrochemicals Limited ISBN-978-81-203-2990-4
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Solids: Recrystallization and Melting Points Reference: Chapter 3. Solids: Recrystallization and Melting Points. Read pages 93-94 and 113-117. Experimental procedure‚ pages 118-119. Parts 1-3. Part 1: Melting points of Urea and Cinnamic Acid. Part 2: Melting point of unknown. Part 3: Melting point of Mixture- Urea and Cinnamic Acid (take melting points of mixtures in 1:4‚ 1:1 and 4:1 ratios). Reactions Main Reaction: Not a chemical reaction but a physical reaction. Urea in solid mixed with
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| Separation of Nitrophenols | | | | Abstract: Using a micro scale steam distillation we separated ortho and para-nitrophenol from a mixture that was already made. After the para and ortho were separated we measured their melting points and compared it to the literature values for purity. For ortho-nitrophenol we had 60% recovery and for para 160% recovery. Our melting point ranges were ortho: 45-46°C and para 64-95°C. Introduction: Nitration: In phenols‚ -OH group strongly
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they receive in their mailbox‚ the e-mails and pop-ups on their computers‚ or the images they see on television are advertising. The logos on the NASCAR autos or even the t-shirts with every name known to mankind are advertising Advertising A Mixture Of Art And Science: Advertising is a fine balance between art and science. The science part of it is consuming information‚ but the true challenge is translating these facts into a relevant strategy‚ into an original‚ creative execution‚ and generating
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