the second part is to determine the unknown substance‚ by comparing its melting point with two known samples and its melting points. In both cases‚ the melting points of the substances will be used to determining the eutectic point and the unknown compound. Abstract: The purpose of this experiment was to determine the eutectic point for the naphthalene biphenyl mixture‚ as well as determining the melting point of an unknown substance by comparing it with two known samples. We will be constructing
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Why is organic chemistry important? Organic compounds are used for many different things. Daily life in today’s world would be very hard to live in without organic compounds; in fact life would not be possible without organic compounds. For example‚ most of your body is made up of organic compounds. The food you eat is made up of organic compounds. Even the flavourings and colourings on processed food are organic. The clothes you wear are‚ yes you guessed it‚ organic as well. What’s more is that
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A Compound Life Sugar Cane Alley was filmed during the summer of 1931 in Martinique a time after the abolishment of slavery. This film parallels a time in Southern Rhodesia where there was a compound system that controlled the mining workers just as the overseers in the cane fields controlled the cane workers. Every aspect of daily life is in some way controlled. Sugar Cane Alley is an insightful film that shows how no matter your environment‚ if you want to succeed you can with a lot of hard work
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body. A medicine is often a mixture of several chemical compounds. Even if it has only one active component compound often other substances are used as fillers or binders to give it bulk. Chemistry‚ the science related to chemical substances‚ provides us the tools to make and study the substances that are the constituents of almost all medicines. The past hundred years or so‚ ever since the advent of organic chemistry‚ many chemical compounds have been discovered in nature that are effective for curing
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When elements combine to produce a compound‚ each element is assigned an “apparent” charge. This apparent charge‚ the charge an atom would have if both electrons in each bond were assigned to the more electronegative element‚ may be positive or negative. It is called the oxidation number or state of the element in the compound. Oxidation numbers are very useful in keeping track of what happens to electrons when various elements combine to form compounds. By remembering a few generalizations
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identify an unknown. In this experiment‚ measuring the melting point was done by using melting point apparatus. The melting point of the unknown sample #10 was 111.5˚C. There were two possible compounds which were dibenzoyl ethylene and o-Toluic acid because their melting points were 111.2˚C and 109.8˚C when each compound was mixed with the unknown. Therefore‚ the unknown #10 was dibenzoyl ethylene. Introduction The melting point is defined as the temperature at which the solid is in equilibrium with its
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saving the same amount. If neither touches their money until age 50‚ the person who began saving at age 20 will be more fortuitous in her earnings than the one who began saving at age 30. This is because the person who began saving early was able to compound their interest heavily over the five year period while they were making annuity payments‚ and then let the interest accrue for the remaining period. These two very important features will impact my personal financial goals in a positive way. If
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chemistry in the laboratory. Then it became the chemistry of carbon compounds‚ especially those found in coal. Now it is both. It is the chemistry of the compounds of carbon along with other elements such hydrogen as are found in living things and elsewhere. The organic compounds available to us today are those present in living things and those formed over millions of years from dead things. In earlier times‚ the organic compounds known from nature were those in the ‘essential oils’ that could be
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exposure to bisphenol A and other known endocrine disruptors.” To its credit‚ the European Commission has banned the use of BPA in plastic baby feeding bottles in March 2011. BPA is used as a raw material in manufacturing polycarbonates and epoxy compounds. Polycarbonate plastic is a lightweight‚ high-quality plastic that has a unique balance of toughness‚ optical clarity‚ high heat resistance‚ and excellent electrical resistance. As a result of these traits‚ polycarbonate is used in an array of common
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simple rate of interest rate: i = .03 x 360 = 37.1% 1 ‑ .03 45 ‑ 15 The compound interest rate: i = (1.0309)30/365 ‑ 1 = .449 = 44.9% b) A 2% cash discount if paid on the 10th day with the bill due on the 30th day (2/10‚ net 30)? The simple interest rate: i = .02 x 360 = 36.7% 1 ‑ .02 30 ‑ 10 The compound interest rate: i = (1.0204)18.25 ‑ 1 = .446 = 44.6% 9) If $1 million face amount of commercial paper (270-day
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