EXPERIMENT 2: SYNTHESIS OF ORANGE II (2-NAFTHOL ORANGE OBJECTIVE 1. To produce dye based to the coupling of diazonium. 2. To understand the characteristic of dye orange II. INTRODUCTION The first dye was introduced by William Henry Perkin on 1856. It can be produced by the coupling of diazonium sulfanilic acid with nafthol in alkaline solution.. This was the common method used to produce dye nowadays. In this experiment‚ dye produced was the orange II. Azo compound is compound that contain
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In Toy Story 2‚ the writers use Buzz‚ the hero of the movie‚ to reveal that we as humans will save a friend just like they would do for us‚ if we were in a time of need. In the first movie Buzz was in danger because Sid was going to launch him in the air with a firework. In the second movie Woody gets stolen by Al‚ a man who works for a toy store called Al’s Toy Barn. In some cases‚ friends will be in a time of need and they will need help from others‚ but when you’re in a time of need they will
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ago‚ you wouldn’t believe that Playmobil‚ one of the most loved toy companies‚ started out as a lock and fitting company originally called Metallwarenfabrik. It was founded by Andreas Brandstatter‚ a locksmith in Zindorf‚ Germany. It had a few years of great track record and was not only manufacturing locks‚ they were even manufacturing cash registers‚ telephones and other various sheet metal products coincidentally to be used for toy establishments. In the 1950s‚ the current owner of the company
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|Faculty of Engineering & Science | |Unit Code |: |UEMK1013 | |Course |: |Chemical Engineering | |Unit Title |: |Chemistry for Engineering | |Year/ Semester |: |Year 1/ Trimester 1 | |Lecturer |: |Dr. Loh Han Chern | |Session |: |201101
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Key Questions Lesson 1 1. One argument against continuing research on the atom is that the cost continues to increase at an alarming rate‚ and the benefits seem to be declining. Whereas quantum chemistry experiments as early as 80 years ago were very cheap and yielded considerable practical results‚ now very few if any practical results are emerging‚ but the costs of experiments continues to increase. On the other hand a common argument for the continued
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CHEM 301 LECTURE Unit 1 0 . COORDINATION CHEMISTRY Factors t hat affect solubility: Common ion: decrease in solubility Complex ion: increase in solubility How does complex ion formation increase solubility? Consider the complex ion formation between silver and ammonia: + Ag + 2NH3 A g(NH3 )2 + Kf = 1 .5 x 10 7 where Kf i s the formation constant (always >1 ‚ formation of the complex is highly favorable) Complex ion formation increases the solubility of sol ids in water
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Gender and the Toy Store How do kids learn how to “act like a girl” or “act like a boy”? If gender is not biological but must be learned‚ then it is important to look at the ways we teach kids in our society how to “do gender” correctly. Kids learn gender in many different arenas and from many different people. One way kids learn about appropriate gender behavior is through toys. This assignment requires that you visit a toy store and take note of how toys are marketed differently to girls and
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experimental techniques which can be used to tell us where the atoms are located in a molecule. Using advanced techniques‚ very complicated structures for proteins‚ enzymes‚ DNA‚ and RNA have been determined. Molecular geometry is associated with the chemistry of vision‚ smell and odors‚ taste‚ drug reactions and enzyme controlled reactions to name a few.
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ical Chemistry 1.which of the following pairs of compound will react? iC3H6+Br2 iiC3H6+Cl2 in sunlight iiiC3H6+H2O in the presence of sulphuric acid ivC3H6+H2O in the presence of concentrated sulphuric acid a.i b.i‚iii c.i‚ii‚iii d.all 2.liqiud y reacts with magnesium metal to produce a gas that burns with a pop sound when a flaming wooden splint is placed near it.liqiud y is most likely a compound that has the formula a.c2h5oh b.hcooh c.h3cooch3 d.c6h14 3.a compound p has the
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Assignment 1 Play activity This assignment had been done with a group of 4 children with ages between 3 and 4½. Planning: In order to do the play activity I had to observe the children for two days. I wanted to know what are they more interested in and what they would like more. After the observation stage‚ I wanted to make sure that the play activity I had in mind‚ suited their age and stage of development. I also made sure that the activity is safe and that it included the PILES
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