Abstract:The Wittig Reaction is a nucleophilic addition in which an alkene is formed as a product. Both the E and Z isomers of the alkene result. Substituents on the aromatic aldehyde affect the E/Z ratio of products that form. In this experiment‚ a nitro group was used as the substituent in the ortho‚ meta and para positions‚ with benzaldehyde as the control. Each of the four aldehydes reacted with (carbethoxymethylene) triphenylphosphorane to produce ethyl cinnamate‚ ethyl-3-(2-nitrophenyl)acrylate
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The Formation of Alum Experiment 4 Introduction In an increasing population the need for land fields are as well increasing daily. Better yet‚ rather than dumping off trash is to instead recycle aluminum cans for a more efficient society. In this lab we will show how aluminum cans react to form alum. Materials and Methods The first step of the lab is to measure the mass of 250 mL beaker‚ once you have done this add .9 to 1.2 grams of aluminum can pieces to the beaker. Take the mass once
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Energy Bar Overview The energy bar market grew from a grass roots effort focused on the consumer base of performance athletes. These athletes usually obtained products at competitive events that were geared towards the everyday consumer. The build up of this market is attributed to PowerBar‚ but there was significant contribution from others. PowerBar and the Market PowerBar began as a company seeking to create a performance-enhancing food that marathoners could consume during an energy-draining
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Dialysis Experiment: Diffusion of Polar and Non-Polar Substances Introduction It was hypothesized that if the solution is polar‚ then it will diffuse through the dialysis bag. All five solutions of starch‚ albumin‚ sodium sulfate‚ sodium chloride‚ and glucose were placed inside of a dialysis bag‚ which was then placed in a culture dish filled with distilled water. After waiting 60 minutes‚ for the solutions to escape the bag‚ the distilled water was tested for all five solutions through individual
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The ozone layer diminishes more each year. As the area of polar ozone depletion (commonly called the ozone hole) gets larger‚ additional ultraviolet rays are allowed to pass through. These rays cause cancer‚ cataracts‚ and lowered immunity to diseases.1 What causes the depletion of the ozone layer? In 1970‚ Crutzen first showed that nitrogen oxides produced by decaying nitrous oxide from soil-borne microbes react catalytically with ozone hastening its depletion. His findings started
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of determining to verify the identity of a compound. In this lab‚ two tests are used to determine whether or not the clear crystal is indeed‚ aluminum potassium sulfate (alum). The results are shown to support the literature value of the melting point of alum. The average experimental value of the melting point of aluminum potassium sulfate (alum) is 91.2 oC‚ approximately 1.8% error. In procedure #2‚ the ratio between alum and water is determined by dehydrating the water molecules from the AlK(SO4)2
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Learning Objectives for Chapter 1 AN INTRODUCTION TO THE HUMAN BODY Education is for improving the lives of others and for leaving your community and world better than you found it. Marian Wright Edelman Define anatomy and physiology. -anatomy is the science of the structure and relationship of the structures. -physiology is the science of body functions (dhow it works) Describe the six levels of structural organization and give examples of each. Chemical - atoms and molecules Cellular - molecules
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and percent yields of product‚ and characterize the final compound by determining the number of waters of hydration by gravimetric analysis List of Observations: After adding (15 mL distilled water/5 drops of 3 M H2SO4) to ferrous ammonium sulfate hexahydrate in the 200 mL beaker‚ the solution was light green/blue After adding 25 mL of C2H2O4 to solution in beaker‚ the color of the solution became a pale green‚ and after stirring solution‚ it became a yellow/orange color. After trying
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the project‚ four different chemicals will be used to change the color of the fire. The compounds are Sodium Chloride‚ Boric acid‚ Strontium Chloride‚ and Copper Sulfate. Two of the chemicals are metals and two are not. Sodium Chloride and Strontium Chloride are both metals. Boric Acid and Copper Sulfate are not‚ even though Copper sulfate is commonly mistaken as
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Name: _____ Date: ______ Ionic Reactions List all of the cations used: Cobalt‚ Copper‚ Iron‚ Barium‚ Nickel List all of the anions used: Phosphate‚ Iodide‚ Sulfate‚ Chloride‚ Bicarbonate‚ Carbonate‚ Hydroxide Compare your results with the solubility rules and/or solubility table in your chemistry text. QUESTIONS: A - Do your results agree with your expectations from the solubility rules/table? Yes
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