Separation Of A Dye Mixture Using Chromatography ********* AP Chemistry (3rd Block) Fauquier High School 8/ 31/ 13 ABSTRACT: The Rf values of seven known color dyes and three unknown samples were observed in order to compare results and discover the hidden identities of the three samples. Three solvents‚ H2O‚ Isopropyl alcohol‚ and a 2% NaCl solution‚ were introduced to the dotted chromatography strips to show three different ratios for each dye on
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pressure (Pc) is a pressure above which the substance can no longer exist as a gas no matter how high the temperature is raised. A supercritical fluid is any substance that is above its Tc & Pc [critical point]. CRITICAL POINT In other words‚ when a substance is above Tc & Pc‚ it exists in a single phase which is neither liquid nor gas; this is a supercritical fluid. 4 Example : CO2 usually behaves as a gas in air at STP or as a solid called dry ice when frozen. If the temperature &
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RUNNING HEAD: CASH FLOW Cash Flow Week 7/ Assignment Beverly Clarkson December 21‚ 2014 Daniel Carraher RUNNING HEAD: CASH FLOW
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1991 1990 1989 I. For each of the years on the Statement of Cash Flows: Major sources of cash in 1990 were investing activities‚ Major Sources of cash in 1989 were financing activities 1. What were the firm ’s major sources of cash? Its Major sources of cash were provided by operating major uses of cash? activities. ( Cash provided by investing activities in 1991 followed by operating activities. Major uses of cash (operating activities also were sources of cash)‚ while was much less than
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Complete ALL problems under each heading in your packer. SHOW ALL WORK AND LABELS! Bolye’s Law Problems Example: If I have 5.6 liters of gas in a piston at a pressure of 1.5 atm and compress the gas until its volume is 4.8 L‚ what will the new pressure inside the piston be? • Read the problem and determine what is given and what is unknown? • Decide which law to use. • Substitute the values (given numbers) from the problem into the equation Given: P1 = 1.5 atm Unknown
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Shale gas is natural gas formed from being trapped within shale formations. Shale gas has become an increasingly important source of natural gas in the United States over the past decade‚ and interest has spread to potential gas shale’s in the rest of the world. In 2000 shale gas provided only 1% of U.S. natural gas production; due to rising oil prices gas prices have also been affected by the rise therefore there was big demand for gas in the US which in 2010 it was over 20% and the U.S. government’s
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Essay Gas Gouging With Gasoline prices at a record high‚ consumers are yelling gas gouging. Customers are very upset at gasoline station owners as they continue to increase gas prices. Those who need gas the most‚ not being able to voice their views‚ will suffer the most from increased prices. Everyday when we drive down the highway‚ we see changes in advertised prices. One gas station may advertise gasoline at $2.69 per gallon and the consumer goes three miles down the road where another gas station
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English 1023---M02 28 October 2012 Gas Prices Today‚ gas price as a national average have risen to 2.1 dollars per gallon. This is the highest gas price increase since 1990‚ during operation desert storm. What is the cause of this drastic increase in gas prices? Limited supply of crude oil from the Middle East some say. Others think the cause is high trade tariffs on incoming foreign oil. But what is the solution to this problem? Is it drilling in our national wildlife reserves in Alaska? Dropping
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Electricity from Natural Gas Natural gas is a fossil fuel formed when layers of buried plants and animals are exposed to intense heat and pressure over thousands of years. The energy that the plants and animals originally obtained from the sun is stored in the form of carbon in natural gas. Natural gas is combusted to generate electricity‚ enabling this stored energy to be transformed into usable power. Natural gas is a nonrenewable resource because it cannot be replenished on a human time frame
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Acids Composition of Datura alba Seed Oil by Gas Chromatography Mass Spectrometry Muhammad Nasimullah Qureshi‚* Muhammad Siddique‚ Inayat-ur-Rahman and Farina Kanwal Medicinal Botanic Centre‚ PCSIR Laboratories Complex Peshawar‚ Pakistan Received July 9‚ 2010; Accepted November 23‚ 2010; Published Online December 14‚ 2010 Methyl ester derivatives of fatty acids were analyzed for the determination of the constituents of Datura seed oil. Gas chromatography coupled to mass spectrometer was used for
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