Applied Engineering science report. Michael Connor B00240227 Part A: Several mixtures of cement‚ aggregate‚ sand and water were mixed at different ratios to workability and compressive strength. The dry materials of the mixture were mixed and water was gradually added‚ the mixture was then placed in a cube and allowed to dry forming the concrete testing cube. Each of the four blocks containing different compositions of each material were then placed in a compressive testing machine and when
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and beat until combined‚ about 15 seconds. Add remaining brown sugar and beat at high speed until soft peaks form‚ about 1 minute longer‚ scraping down sides halfway through. Using a whisk‚ fold one-third of beaten egg whites into chocolate mixture to lighten. Using a rubber spatula‚ fold in remaining egg whites until no white streaks remain. Pour batter into prepared springform pan‚ and smooth the top with a
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FRACTIONAL DISTILLATION October 29‚ 2012 CHEM 210 ME01 INTRODUCTION The process of separating the components of a mixture by distillation into relatively pure fractions is referred to as fractional distillation. Simple distillation‚ a process with similar goals‚ is noted for being a satisfactory attempt at separating two components in an ideal mixture‚ but not as accurate as fractional distillation. To explore these statements further‚ there needs to be an in depth look at the theory that
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Physical and Chemical Changes Lab Question: How do you distinguish a physical and chemical change? Hypothesis: If we use these materials and use magnets‚ water‚ burners‚ and filters on the mixtures and elements given we should determine what kind of effect these materials given will have on these mixtures and elements‚ physical or chemical. Procedures: -Part A: Record all observations of Part A in Data Table 1 1. Label each substance on seven pieces of paper. Put two pieces of magnesium
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longer than 30 minutes. The heat from the hot plate speeds the reaction‚ and the reaction mixture must be kept no lower than 25 mL by adding distilled water. An aspirator is assembled by using a suction flask‚ clamp‚ ring stand‚ rubber tubing‚ funnel‚ and filter paper to filter the reaction mixture once the first reaction is complete. The filter paper is then wetted‚ the vacuum source is turned on‚ and the mixture is poured through the filter‚ using 5 mL of distilled water to rinse the beaker. The filter
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and different test compounds were applied‚ and results were noted as for changes in colors of precipitates or solutions. For Dische Test‚ light blue was obtained for RNA and dark violet for DNA. For Murexide Test‚ a yellow layer was obtained with a mixture of red color and eventually became yellow or orange after addition of warm water. For John-Wheeler Test‚ a violet precipitate was obtained and lastly for Phosphate Test‚ a yellow precipitate was obtained. Keywords: Nucleic Acids‚ Dische Test‚ Murexide
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concentrated sulfuric acid and 0.75 mL of concentrated nitric acid. We then mixed the two solutions‚ the mixture of sulfuric acid and nitric acid to the mixture of methyl benzoate and sulfuric acid. When the nitrating solution was being added to the mixture o of methyl benzoate and concentrated sulfuric acid. There was a color change. The color change was from clear to light yellow. As we added more of the mixture the color change increased. The color change was due to the conversion of aromatic properties
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processes‚ especially in water treatment and sewage treatment in which undesirable constituents are removed by absorption into a biological film grown on or in the filter medium as in slow sand filtration. Decantation is a process for the separation of mixtures‚ by removing a top layer of liquid from which a precipitate has settled. Usually a small amount of solution must be left in the container‚ and care must be taken to prevent a small amount of precipitate from flowing with the solution out of the container
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alcohol is also measured after 2nd process as 82%. INTRODUCTION The objective of this experiment is to distillate the alcohol-water solution into ethanol and water. Distillation is a process of separating mixtures based on differences in volatilities of components in a boiling liquid mixture. Distillation is a unit operation‚ or a physical separation process‚ and not a chemical reaction. The basic requirement of distillation is that the components of the liquid solution must have different boiling
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rubber septum‚ with caution as to minimize exposure of moisture from the air to the reaction mixture. The rubber septum was replaced and the reaction flask was cooled in an ice bath that was prepared in a 100-mL beaker. When AlCl3 was added to the mixture‚ the mixture began to bubble‚ changing the color from yellow to a dark purple. Using a plastic pipet‚ acetic anhydride (0.6 mL) was added to the mixture. The ice bath was removed and the water aspirator was turned on. A hot water bath was prepared
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