EXPERIMENT OBJECTIVE The aim of this experiment is synthesize hexaphenylbenzene via an aldol condensation reaction‚ followed by a Diels-Alder [4+2] cycloaddtion. This is final step in the multistep synthesis pathway to form hexaphenylbenzene‚ and uses the products of the previous experiments: benzil and diphenylacetylene REACTION DIAGRAM TABLE OF REAGENTS BENZIL DIBENZYL KETONE TRITON B 40wt% IN METHANOL (1.79 M) TRIETHYLENE GLYCOL TETRAPHENYL-CYCLOPENTA-DIENONE DIPHENYL ACETYLENE
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To begin the experiment‚ 8 ml of 0.1% Bromophenol blue (BPB) solution was made by diluting 0.25% BPB solution. From the 0.1% BPB solution‚ six diluted solutions‚ ranging from 1:50 to 1:10000‚ were prepared. Each solution was then run in the UV spectrophotometer to measure the absorbance at 590nm. DI water was used as a blank and samples were measured starting from the least concentrated one. The graph of concentration versus absorbance was plotted from the obtained data. In the second part‚ each
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diffusion and ethanol concentration will be directly proportional. Method Followed the instructions that were given on the sheet (Activity 2.8). Slices of beetroot were left overnight to wash away excess dye and then placed into boiling tubes and left for 30 minutes to allow the beetroot juices to diffuse. The beetroot was then removed and we used the colorimeter to measure the % absorbance of the remaining liquid. Results % Concentration of Ethanol 0 10 20 30 40 50 60 70 % Absorbance
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The Aim of the experiment: In this experiment I will investigate the relationship between the concentration of the hydrochloric acid and the rate of a reaction. To find this out I will react different concentration of hydrochloric acid and magnesium‚ from there I will monitor the gas (hydrogen) produced and analyse the results. Prediction: I predict the higher the molarity of the hydrochloric acid the faster the rate of reaction therefore the quicker the gas will be produced in the specific
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given the bulk density and minimum void content. Equipment * Electronic Balance * Metal Cylinder (AS Compliant) * Metal Scoop * Tamping Steel Rod Test Procedure 1. Determine the weight and volume of the cylinder (for lab experiment written on side). 2. For the mixed aggregates ensure they are well mixed. Now fill the cylinder with the aggregate to 1/3 the height of the cylinder using the scoop. 3. Compact the aggregate with the tamping rod giving 25 strokes without
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Abstract Ernest Rutherford’s Gold Foil Experiment was a major stepping stone one the way to discovering what the atom was really made up of. From the beginning of his research with alpha particles to his discovery of the atomic nucleus‚ Rutherford made many contributions to the microscopic world of the atom. The Rutherford Experiment‚ otherwise known as the Gold Foil Experiment‚ was the crown of his achievements‚ and it was during this experiment that he discovered the atomic nucleus. (Aydin &Hanuscin
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Osmosis Experiment Diana Arrowood Grand Canyon University BIO-100L Biology Concepts September 16‚ 2011 Osmosis Experiment Directions Use the information below to complete the Osmosis Experiment. Materials 1 fresh baking potato Water Salt Four small containers (i.e.‚ drinking cups or clear glasses) A metric ruler Methods and Procedure 1) Place 1 cup (236 ml) of water in each of the 4 containers. In 2 of the containers‚ add 1 tablespoon (14.8 ml) of table salt and mix well until
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Assignment: Do sports drinks really work? Question... How do sports drinks affect muscle reaction time? Hypothesis My hypothesis is if sport drinks are consumed‚ then the reaction rate will improve. Sport drinks provide individuals with the required amount of water‚ carbohydrates and electrolytes (sodium and potassium) which is lost in sweat while exercising. Maintaining adequate electrolyte levels will enable better cell function‚ which is needed for muscle endurance‚ among other bodily capabilities
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Practice makes perfect‚ not pitch perfect. As I turned my key to start the ignition of my car‚ the radio started to play ‘I kissed a Girl’‚ and at that moment‚ I was struck with a memory. You know when you’re in one of those moods to watch random videos on YouTube‚ and once the video is done you click on a related a video. Well‚ I remember I was watching this baby kitten who is just too cute for life‚ and maybe 20 related videos later‚ I was intrigued by the head tittle of ‘Katy Perry without
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Makalah Biologi Percobaan Reaksi Hidrogen Peroksida dengan Katalase Penulis: Jancolin Yani Pendahuluan Seperti yang kita tahu bahwa hydrogen peroksida yang dihasilkan oleh sel-sel didalam tubuh kita akibat metabolism sel akan terpecah menjadi gas hydrogen dan oksigen dengan adanya keberadaan enzim katalase. Zat hydrogen peroksida sangat berbahaya bagi tubuh dalam kuantitas yang banyak oleh karena itu harus dipecah dan dikeluarkan. Sebagian besar zat hydrogen peroksida
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