molecule for each of the following. (3 points) 1. COOH -OH 2. COH -OH 3. COH -OH 1. List whether each of the following substances was positive or negative for reducing sugar‚ as indicated by the Benedict’s test. (6 points) 1. corn syrup (1 point) positive 2. table sugar (1 point) positive 3. unknown 1 (1 point) negative 4. unknown 2 (1 point) negative 5. unknown 3 (1 point) positive 6. unknown 4 (1 point) positive 1. List whether each of
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calories. Many companies are in the market with their products as complete health products; such as Complan‚ Bournvita‚ Horlics etc. but the parent is always wondered which is the best health drink to buy for their kids? COMPAN VS HORLICS Points of Differentiation: Product wise: Essential nutrients for kids: Look for these components when choosing any nutritional supplement for kid. * Calcium- Required for building strong bones and sustaining a normal
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Introduction The purpose of the experiment was to determine the melting points of compounds using a Mel-Temp device. The melting point of naphthalene‚ urea‚ and sulfanilamide are found. This is then followed by the measuring of an unknown compound‚ and an impure sample (a small amount of naphthalene mixed with the unknown). Experiment In the lab‚ the height of the chemical in the capillary was set to 2-3 mm thickness. The voltage at the Mel-Temp started at a low setting of 1.5-2. The heat was
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BOILING POINTS AND MELTING POINTS PART 2 Name: Grethel Zegarra Date of Lab: October 26‚ 2010 Date lab is due: November 2‚ 2010 HYPOTHESIS The boiling point in degrees Celsius will increase as the number of carbon atoms increase. The melting point of the unknown will indicate its mixed substances. The boiling point will increase as a result of the different branching of the OH‚ the melting point will be affected by the different positioning of the OH on the benzene ring. PURPOSE To introduce
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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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Organic Chemistry 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
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Melting Point Determination Lab Materials: Graduated pipette Capillary tube Tin wipe Sample Melting temperature apparatus Thermometer Procedure: Take open end of capillary tube and tap it gently into sample. Take tin wipe and place over the opening. Gently tab it so the sample will funnel to the bottom of the tube. You may also use a graduated pipette to accomplish this. Now‚ place the capillary tube in the designated spot in the melting apparatus‚ and once placed‚ turn the apparatus
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Josh Copeland Professor Patton ENGL 1020M06 19 Feb. 2014 The Initiation Becoming an adult does not happen in a day. This process takes years of maturing and developing a brain that is capable of making smart life decisions. In the short stories “Stepdaughters” by Max Apple and “A&P” by John Updike‚ two young adults are put in difficult situations and forced to overcome them by making their own choices. In “Stepdaughters”‚ Stephanie‚ a high school student athlete struggles with her relationship
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Course grades are comprised of the following components: (1) 4 Tests (100 points each): Tests will cover the information presented in both the lectures and the text. Each of the four tests will cover the unique section of material outlined in the syllabus‚ is worth 100 points‚ and will consist of multiple choice questions (approx. 80% of each test) and short answer essays (approx. 20% of each test). Item content will focus on central concepts‚ definitions‚ and theories of psychology. The final exam
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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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