Aldol In this preparative lab‚ an aldol (trans-p-anisalacetophenone) was produced from the reaction between p-anisaldehyde and acetophenone with the presence sodium hydroxide. The reaction also showed the importance of an enolate and the role it played in the mechanism. Sodium hydroxide acts as a catalyst in this experiment and is chosen because of its basic conditions and pH. The acetophenone carries an alpha hydrogen that has a pKa between 18 and 20. This alpha hydrogen is acidic because of its
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Science Q. 1. What is chemical reaction? Q. 2. Which substance is used for white-washing the walls? Q. 3. What are exothermic reactions? Give one example also? Q. 4. Name four types of chemical reactions? Q. 5. What are combination reactions? Q. 6. Give two example of combination reaction? Q. 7. What are displacement reactions? Q. 8. What are double displacemwent reactions? Q. 9. What are oxidation reactions? Q. 10. What are reduction reactions? Q. 11. What is rancidity
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Chapter 10—Developing and Managing Products MULTIPLE CHOICE 1. When the manufacturer of L’Oreal shampoo introduced shampoos designed specifically to appeal to preteens‚ the product was: e.a.b.a.a.c.b.c.e.b.e.c.a.d.e.b.d.e.a.c.b.b.d.e.c.d.b.d.b.a.b.e.d.c.c.a.a.b.b.e.a.b.b.b.c.b.e.a.d.c.b.d.c.a.e.b.e.a.e.e.a.c.b.a.d.e.a.d.a.c.d.c.e.d.b.c.c.d.b.e.a.c.d.e.d.b.a.e.a.e.c.a.d.e.e.e.a.c.d.b.a.c.b.a.d.d.a.b.c.b.a.e.c.a.c. a new product because it was an improvement or revision of an existing product
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factors affecting the kinetics of reaction between peroxodisulfate (vi) and iodide d. del prado1 and j. belano2 1 department of food science and nutrition‚ college of home economics 2 department of food science and nutrition‚ college of home economics university of the philppines‚ diliman‚ quezon city 1101‚ philippines date submitted: january 7‚ 2013 ------------------------------------------------- ------------------------------------------------- ABSTRACT -------------------------------------------------
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of an object is determined using a process called titration. According to Petrucci et al.‚ titration is a reaction carried out by the carefully controlled addition of one solution to another. It has several types like acid-base titrations and redox titrations. This experiment focuses on the latter type‚ the redox titration. A redox titration is based on an oxidation-reduction reaction between analyte and titrant (Harris‚2009). It involves the transfer of electrons between the two solutions. This
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Double Replacement Precipitation Reactions Determine whether an ionic double replacement reaction has occurred.If I place different amounts of ionic solutions in a well plate‚ then I will be able to determine which of the solutions has had an ionic double reaction placement because I will use the solubility rules to decide which product produced the solid precipitate.Place five drops of silver nitrate into well A1 through A4. Place five drops of Iron (III) Nitrate into rows B1 through B4. Place
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Course Title: RADIOGRAPHIC TECHNIQUE AND FILM PROCESSING/ANALYSIS 1 Course Outline: I. Processing Room Design (2 Hours Lec.; 4 Hours Lab.) 1. Size and location 2. Construction considerations 3. Entrances 4. Lighting and ventilation 5. Drainage system II. Imaging Accessories (8 Hours Lec.; 14 Hours Lab.) 1. Radiographic Film 2.1. Types of Films 2.2. Film construction 2.3. Handling and storage 2. Film holders 3.4. Cardboard film holder
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Lab Report: Stoichiometry Lab Oct. 27‚ 2011 Claire Elizabeth Lab Partners: Hannah Signature:___________________ Introduction- Baking soda and vinegar are two common materials found in almost every household. That‚ plus the fact that all the starting and finishing materials are non hazardous and safe‚ is why this is one of the first chemical reactions that many people are exposed to The purpose of this experiment tests which of the two reactants (vinegar and baking soda) is the limited
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Factors Affecting Reaction Rate Bob Jones Josh October 2‚ 2014 Period 3 Introduction: In reference to the collision theory‚ molecules act as small spheres that collide and bounce off each other‚ transferring energy among themselves when the collide. In order for a reaction to occur‚ there must be collisions between molecules. Through experimentation‚ factors are discovered that influence the reaction rates of chemical reactions include the concentration
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could be under rocks or leaves. The behavior of 10 isopods are going to be observed and recorded in the span of ten minutes. The isopods were placed in a choice chamber‚ with one side contaminated with regular water‚ and the other contaminated with salt water‚ and evenly placed into each chamber. Throughout the ten minutes‚ observations provided that the
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