Separation and Purification of Organic Compounds Codilla‚ Christine‚ Cristobal‚ Marian‚ Dionisio‚ Jermaine‚ Dumaquita‚ Vanessa‚ Edrosolo‚ Lyka‚ Esquivel‚ Christine1 1University of Centro Escolar‚ Makati Date Performed: December 5‚ 2012 Date Submitted: December 17‚ 2012 Abstract The distillation process was successfully done because of the separation of water from the acetone. When the distillate was lighted with the matchstick it produced flame which indicates that there was more presence
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initial deposit into a bank account or CD (certificate of deposit) is given by A=P(1+r/n)^nt A is the amount of the return. P is the principal amount initially deposited. r is the annual interest rate (expressed as a decimal). n is the number of compound periods in one year. t is the number of years. Carry all calculations to six decimal places
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this is significant activity of the neurons to allow us to understand abnormality in the nerve that cause disorders. The objective of this study was to trigger a compound nerve action potentials (CAPs) and examine the effects of a stimulus voltage on a nerve and inspect their threshold‚ refractory period and also their velocity. Compound nerve action potentials (CAPs) are summed action potential of one nerve‚ one nerve consists of many neurons. We used the sciatic Lithobates pipiens nerve in this
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Al(NO3)3 b. ZnSO4 c. Ba(C2H3O2)2 d. NaHCO3 CH3COOH Calculate the percentage oxygen in the following compounds: a. Na2CO3 b. BaSO4 c. BaO d. Al2O3 e. H2SO4 Determine the empirical formula and the molecular formula of a compound containing 40.0% C‚ 6.7% H and 53.3% O. The molecular weight of the compound is 60.02g. Calculate the percentage composition of a compound containing 27.93g Fe‚ 24.05g S‚ and 48.00g O. How many grams of silver is present in 3.45g Ag2S? Balance
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suspect that this unknown compound is either acetanilide or phenacetin. From the solubility of acetaminophen and phenacetin‚ we could know both of them are relatively soluble in boiling water but insoluble in cold water so that we took the recrystallization as the method to purifying the unknown component. After the unknown purified‚ then we could measure it melting point. This whole experiment is based on purifying and then finding the melting point of the unknown compound. The theory is that if a
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Hydrogen is recognized as the simplest and lightest chemical element in the periodic table; even though it is identified as one of the top elements in abundance in the world (consisting of 0.9 percent of the total mass on earth)‚ it is considered to be the most abundant element in the entire universe. It is a gaseous element with the atomic symbol being H. It is usually categorized under the first group of the periodic table known as the alkali metals. It contains only one electron that revolves
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that natural food have‚ certain chemical compound have discovered and developed certain ways to preserve food and extend their life for longer. Furthermore‚ there are many different types of chemical compounds were added to our daily diet‚ yet certain chemical compounds can be listed on the nutrition label‚ and even they cannot be tested or seen on the products. Butylated hydroxyanisole and Butylated hydroxytoluene and Ethanol are among of that chemical compounds‚ which were used in certain food and
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using the equations‚ simple and compound interest. These are example I have achieved this school quarter. Discuss one or two topics or concepts that have been a struggle so far. The concepts that I have a struggle with this term start with rounding and estimating like for example‚ I would have something like maybe 47 but I know how you round to the closer which will be 50 and if the whole number is 1. The second concept I been struggle with has been simple and compound interest has been the worse.
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the amount of Protons and Neutrons in the Nucleus. Atomic Number The amount of protons found in the nucleus. Element A pure substance made up of 1 type of atom. Molecule Two or more atoms joined (bonded) together‚ forming a small particle. Compound A substance made up of two or more different types of atoms that have been joined (bonded) together. Lattice A lattice is a part of bonding between metals. Word Equation A word equation is an equation where only the words of the products and
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source to search information about this new material. Thermochromism is the reversible change in the color of a compound when it is heated or cooled. Systematically investigated thermochromism was in 1971 at first time. The following 4 materials are used as thermochromism (1) Organic Compound (2) Inorganic Compound (3) Polymer (4) Sol-Gel 1. Organic compound thermochromism Organic compound thermochromism occurred due to equilibrium between two molecular species‚ acid-base‚ keto-enol‚ lactim-lactam
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