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    Gas Chromatography Essay

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    Chromatography means "color writing" literally from the Greek words chroma and graphe. It is a separating technique for a mixture of chemicals, which can be in gas or liquid form, by letting them creep slowly past another substance. There are two important things in chromatography that is it must has one state of matter such as gas or liquid, that is known as mobile phase, moving over the surface of another state of matter which can be liquid or solid that stays where it is that is known as stationary

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    Gas Chromatography Principle: A sample to be analysed is injected into the chromatography instrument. The sample solution enters a gas stream which transports the sample into a separation tube which is also known as the column. Various components in the sample solution separated inside the column. GC has principles similar to fractional distillation. Both processes separate mixture based on boiling point. Fractional distillation does it on a larger scale whereas GC does it on a small scale Source:

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    Molar Mass Of Gas Essay

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    A volatile liquid can be easily converted to its gaseous state, the gas that forms from vaporization is known as vapor and it is assumed to behave as an ideal gas. One of the properties that characterize a volatile liquid is determination of its molar mass. Dumas method also known as the vapor density method uses the vapor density of the unknown volatile liquid in determining its molar mass. The major assumptions of these methods are the substance behaves ideally. The molar mass of a volatile liquid

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    Gas Laws/Acids and Bases C2H4O2+NaHCO3--->NaC2H3O2+H2O+CO2 Pressure.Gases are the only state of matter that can be compressed very tightly or expanded to fill a very large space. Pressure is force per unit area. The earth's gravity acts on air molecules to create a force, that of the air pushing on the earth. This is called atmospheric pressure. The units of pressure that are used are pascal (Pa), standard atmosphere (atm), and torr. 1 atm is the average pressure at sea level. It is usually used

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    INTRODUCTION A gas chromatograph (GC) can be utilized to analyze the contents of a sample quantitatively or in certain circumstances also qualitatively. In the case of preparative chromatography, a pure compound can be extracted from a mixture. The principle of gas chromatography can be explained as following: A micro syringe is used to inject a known volume of vaporous or liquid analyte into the head or entrance of a column whereby a stream of an inert gas acts a carrier (mobile phase). The column

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    Gas Chromatography Abstract

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    Abstract Gas chromatography (GC) and high performance liquid chromatography (HPLC) is an important technique which is used for the analysis of mixtures. In these instruments the mixture allows mixtures the instrument allows mixtures to separate in each components and determine the amounts of components present in sample. By using GC and HPLC we can analyzed a very small (microliters) sample. The sample which we want to analyze by GC must be volatile. The vaporized sample is allowed to flow in along

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    Ideal Gas Law Lab Report

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    Name: Institution: Course: Instructor: Date of Submission: Absolute zero Abstract The purpose of this laboratory was to apply the ideal gas law and temperature and pressure measurements to extrapolate absolute zero value on a Celsius scale. This was done by recording Pressure and temperature measurement values for different n values. In addition, linear fit graphs of pressure versus temperature were plotted for the different n values. The absolute temperature value was then determined from the

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    Natural gas is primarily composed of methane; the main products of combustion of natural gas are carbon dioxide and water vapor; same compounds that are exchaled when breathing. Coal and oil are composed of much more complex molecules with higher carbon ratio and higher nitrogen and sulfur contenents. When combusted, coal and oil release a higher level of harmful emissions that are dangerous to the environment. Coal and fuel oil release ash particles on the environment that are substance that do

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    Have you ever been to the gas station and thought to yourself "why are these gas prices so high"? You may have even thought about cutting back some of your driving. When gas goes up it seems like the whole world may have turned their backs on you. In fact, Americans have an unquenchable thirst for gasoline. You could look at the amount of traffic on roads and highways, and you'll see that if a severe gas shortage were to happen it would cripple the United States into shambles. It has been proven

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    Gas Law Lab Report

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    Marigona Krasniqi 15 October 2015 Contemporary Science: Chemistry Lab assignment Gas Laws Lab Part 1 – The effect of temperature on gas volume Problem: Which gas law describes these results (Paper assignment)? Observation/ Research: Charles’s Law According to Jacques Charles, “if the temperature of the gas increases, the volume of the gas also will be increased or other way around.” (Charles). This statement describes Charles Law. According to this law, “the Volume and Temperature are directly proportional

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    A safety audit for the gas-solid fluidization experiment was conducted. The following safety concerns were found when performing the audit: operating beyond the operational limits, spillage of the beads, risk of head injury from bending over to change the beads in the apparatus or from the low bar, and congestion of the workspace. One of the biggest safety concerns with this lab involved the small glass beads that acted as the solid in the experiment. If the gas flow rate goes below 50 standard cubic

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    pressure exerted by a particular gas are highly dependent on one another. This is explained by several Gas Laws. Boyle’s Law states that when the temperature is kept constant, pressure of gas is inversely proportional to the volume. Relating this principle to molar volume, the higher the pressure, the smaller the volume the gas particles occupies. When the volume of the container enclosing the gas is reduced, there are more gas particles per unit volume. The gas particles collide with each other

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    is the most obvious reason why running out of gas will hurt you. At best, you call a friend to bring you a tank of gas or you are within walking distance of a gas station. As for this case you can’t since you are now stuck in the middle of the southern Italy in the middle of summer. Running out of gas is also bad for your car engine. Over the years, your gas tank has accumulated a lot of material at the bottom of your gas tank. When you run out of gas, you basically take all that material and push

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    chemicals into the holes to break up sedimentary rock in order for natural gas to escape (CDC, 2012). Moreover, hydraulic fracturing impacts the environment by contaminating the ground water, and affects the health of people, especially the workers that retrieve the natural gas and the animals living in towns that have natural gas drilling (CDC, 2012). The documentary Gasland on YouTube shows the damages of natural gas drilling caused by fracking companies which pollute the groundwater and

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    using natural gas for thousands of years, in fact, the Chinese are believed to have used it as early as 500 B.C. to boil and purify water. According to Paykani (2013), natural gas was used to fuel streetlights as early as 1785, and was the primary source of light during the 19th century. The invention of the electric light bulb in 1879 then forced natural gas companies to find other uses for the resource, and as a result, natural gas has become a very popular source of energy. Natural Gas vehicles have

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    picture of shale gas development—cornucopia or curse— is the true one? This study finds that they both are. It presents the results of a qualitative review of articles discussing shale gas and hydraulic fracturing, drawn mostly from the peer-reviewed energy studies literature, published in the past 10 years. On the one hand, this review finds that shale gas production, done properly, can bring with it wide-ranging benefits including the enhancement of energy security, lower natural gas prices, a cleaner

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    How Long Does Gas Last? All You Need To Know About the Life of Gasoline The use of gasoline is no doubt very important in today’s modern era. Since the life of gasoline might depend on certain factors, there is a need to be equipped with information on whether how long does gas last and how to determine a bad or expired gas. Increasing numbers of people are still wondering whether how long does gas last. There are also many individuals that are into trying to find out whether gasoline really goes

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    OF PERCENTAGE ETHANOL IN BEVERAGES 1. Introduction to Gas Chromatography Gas chromatography is a very powerful separation technique for compounds that are reasonably volatile. The components of a sample partitions into two phases, the 1st of these phases is a immobile bed with a great surface area, and the other is a gas phase that permeates through the immobile bed. The sample is evaporated and passed by the mobile gas phase or the carrier gas through the column. Samples separates into the stationary

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    Gas Mask Invention

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    Sly Chavey Mrs. Wunderle Inventor Research 27 Feb. 2018 The Gas Mask On July 24, 1916, a man struck a pocket of natural gas with a pickaxe in a tunnel and ignited it. The noxious fumes were flowing through the tunnel and choking the miners. No one had the equipment to go into the tunnel and save anyone. They only knew one man that had a chance to rescue these men and so they called him in. This man drove to the site in his pajamas and safety hood and ran into the tunnels to save as many men as he

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    compounds may affect instrumental signal Gas Chromatography/Mass Spectroscopy: The gas chromatography device is generally a reliable analytical instrument. The gas chromatography instrument is effective in separating compounds into their various components. However, it cannot be used for reliable identification of specific substances. The mass spectroscopy instrument provides specific results but produces uncertain qualitative results. When an analyst uses the gas chromatography instrument to separate

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