Introduction The purpose of this project was to detect which organism we had in our unknown mixed culture tube by running a series of experiments to detect which specific Gram negative organism we had. To detect your gram positive from the mixed culture was given as extra credit points also. A Gram stain was performed and isolation streak plate in order to isolate and observe the unknown organism. Before the series of test‚ a dichotomous key had to be written up in order to know what steps
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Properties of Gallium Gallium is a chemical element that is located in Group 13 or the “Boron Group” on the periodic table of the elements. It has the chemical symbol Ga and has an atomic number of 31 meaning it has 31 protons and 31 electrons. The atomic mass of Gallium is 69 meaning it has 38 neutrons. Gallium is a transition metal and was discovered in 1875 by French Chemist Paul Emile Lecoq de Boisbaudran after the element was predicted by Dmitri Mendeleev who created the periodic table of the
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element on the periodic table. Its atomic number is 21. Its atomic symbol is Sc. It has a silvery white color. It is classified as a metallic. Its group on the periodic table is 3. Its atomic mass is 45. Its melting point is 1541 Celsius. Its boiling point is 2836 Celsius. Its atomic is 216 pm. These a really interesting element. Scandium was discovered in Scandinavia in 1878. It was discovered by a man named Nilson. There is two metals that scandium has that were only found in Scandinavia. They are
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plutonium. They range from an atomic mass of 232 to 246. Plutionum-239 is thought to be the most important. It can be split into two parts called "fission fragments" that release large amounts of energy. It melts at 641 degrees Celsius and boils at about 3232 degrees Celsius. <br><br>Plutonium is made in large amounts by nuclear reactors. Since it ’s easy to produce it is used a lot in nuclear weapons. An amount of Plutonium about the size of an orange is enough to fuel a nuclear reactor. It is also
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vials of nutrient broth with various organisms that are known to be resistant to multiple antibiotics. We will also inoculate various organisms that are as close to the wild type as is feasible. The vials will be allowed to incubate at 37 degrees Celsius for 24 hours. The number of bacteria in a given cultured sample is too great to be counted directly. The samples will be serially diluted by a factor of 10 in sterile saline‚ to be repeated 7 times. A 10 microliter aliquot from each dilution will
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005g PHPB 2.00g trans-stilbene 1.54g KOH 13mL methanol 21mL ethylene glycerol 2.726g stibene dibromide produced Actual yield : 0.818g diphenlacetylene Melting Point : 62 - 75 degrees Celsius II. Discussion The experimental melting point range of our purified product was 60 degrees Celsius when researched‚ but when done experimentally was only. This began around the right range‚ but ended up being much higher than the literature value‚ which means that there was some residual impurities
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Microscale Crystallization of Sulfanilamide Purpose The purpose of the experiment was to use the crystallization technique to purify the solute sulfanilamide using 95% ethanol as the solvent‚ to calculate the amount of sulfanilamide that was recovered‚ and to determine the purity of the final product. Introduction In this experiment‚ recrystallization will be the method used to purify the solute sulfanilamide using ethanol as the solvent. Based on the solubility curve on the solubility
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Just last week I was riding in a London black cab (not a very green mode of transportation but a luxury since I am currently 9 months pregnant!) and remarked to the cabbie how mild our London winter has been thus far – in the mid 40’s (7 degrees Celsius). He responded that when he was a school boy in the mid-1950’s it snowed in London on a regular basis. Last February‚ London experienced a “freak” snowstorm that shut the entire city down for the day and was considered anything but a “regular” occurrence
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Lecture :1 Geography: Geography is the study of locational and spatial variation in natural and human phenomena on Earth. Vidal de la Blache Geography is the science of places‚ concerned with the qualities of potentialities of countries. The particuler character of a country is expressed by the totally of its feature‚ the social diversities associated with the diversities of places.Geography mainly divided into two parts. • Physical geography • Human geography Physical
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acetaminophen from the manufacturer is 500mg of active ingredient. After conducting the experiment-extraction‚ distillation‚ and evaporation- 451mg of active ingredient. This relates to a 68.1% recovery. The melting point was between 158 and 165 degrees Celsius‚ which is almost ten degrees lower than the published melting point of acetaminophen. After conducting a TLC plate‚ the Rf value was calculated to be .4268‚ the same as the standard Rf. Introduction: The purpose of this lab was to identify
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