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Remember the ethyl alcohol — water azeotrope? You might be thinking: If I cannot distill the water out and I want my alcohol anhydrous (dry), because the water will kill my yield, what should I do? You need to dry. ... The types of baths are many: water, air, toluene, sand, oil, and graphite, but they all have the same general rules. Hot plates and heating mantles must follow these rules also. 1. Always protect the substance you are drying from the water in the atmosphere ...

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From that moment on toluene was completely substituted by acetonitrile, already at the stage of the azeotropic distillation. Although the process appeared rather robust at this point, an unsteadiness in yield was nevertheless noticed ...

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The boiling point of a liquid is the temperature at which the vapor pressure of the liquid equals the pressure in the liquid, enabling bubbles to form without being crushed. A special case is the normal boiling point , where the vapor pressure of the liquid equals the ambient atmospheric pressure . ...

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The vacuum re-distillation was done in order to break the glyoxylate azeotrope with toluene. (Neat glyoxylate was needed for solvent and reaction stoechiometry studies.) It was later found that the presence of toluene was not ...

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Kansas City Star

Craigslist unexpectedly pulls adult services listings Ars Technica After months of pressure from state attorneys general, Craigslist pulled its adult services listings offline over the Labor Day weekend. Visitors to the site were greeted with a black bar with ... Craigslist dumps 'adult service' advertsBBC News Craigslist Abandons Adult Services... for Good?PC Magazine Craigslist Censors Adult Services SectionABC News CNET -Washington Post -USA Today all 724 news articles »

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ABC News

Weakened Earl Mostly Spares East Coast, Insurers Wall Street Journal After a week of worrying and preparation, Hurricane Earl managed to mostly miss the mid-Atlantic, and largely fizzled out before it reached Massachusetts. That was good news for people with coastal homes and businesses, and turned what was ... Earl's biggest damage in Northeast: businessThe Associated Press Tropical Storm Earl rakes Nova ScotiaLos Angeles Times Earl put up its dukes, but withered into a blob of rain and windChristian Science Monitor WBZ -Bloomberg -Voice of America all 4,738 news articles »

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New Zealand Herald

BP well declared to be no longer a threat to gulf Los Angeles Times With the replacement of the failed blowout preventer and a cement plug in place, the well's seal is almost permanent, the federal spill response chief says. The final step will be to plug the well from the bottom. By Richard Fausset, Los Angeles Times ... Busted BP well no longer 'threat' to Gulf: US officialAFP Final plugging of BP's busted well could happen this weekUSA Today BP replaces failed blowout preventer on Gulf wellReuters NECN -The Associated Press -Washington Post all 653 news articles »

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White House Faces Political Headaches Over Jobs Ahead of Labor Day ABC News The skies over the White House were overcast Friday as President Obama and several prominent members of his economic team entered the Rose Garden to deliver remarks on the Labor Department's newly released August ... Economy just treading waterWashington Post Obama Promises New Economic Proposals Next WeekCBS News Is Obama focused enough on the unemployment rate?Christian Science Monitor CNN International -Bloomberg -The Associated Press all 1,706 news articles »

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The Hindu

KiwiRail sends water to quake-hit Christchurch Stuff.co.nz By STAFF REPORTERS Workers remove a damaged spire from St. Mary's Anglican Church in Timaru following the earthquake. Di & Craig Roberts refuse to look at their earthquake-damaged house near Darfield. A fire that broke out in Christchurch as Prime ... Buildings collapse, 2 injured in powerful NZ quakeThe Associated Press Latest news: Christchurch earthquakeNew Zealand Herald New Zealand Imposes Curfew for Quake-Hit CityCBS News Wall Street Journal -CNN -The Guardian all 2,584 news articles »

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msnbc.com

American Muslims Gather to Break Fast Voice of America The holy month of Ramadan is marked by fasting from dawn to dusk. Muslim Americans end each day of fasting with a festive meal known as Iftar. After a long day, they relax and share the rituals of Ramadan from sundown to the predawn hours. ... Muslims tread carefully around proposed mosque near ground zeroChristian Science Monitor For US Muslims, a 9/11 anniversary like no otherThe Associated Press Who will define ground zero? 9 years after 9/11, tug of war over 'sacred ...The Canadian Press Dayton Daily News -TMCnet -New York Times all 390 news articles »

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The Guardian

Erekat: Israel has agreed to honor Olmert concessions Jerusalem Post J'lem remains mum on content of talks as negotiating teams prepare to meet in Sharm e-Sheikh; Palestinian negotiator says framework agreement will come within a year. Israel and the Palestinian Authority have agreed ... Israel targets 3 Gaza tunnels after rocket hits Israeli townCNN Palestinians, Israelis to seek framework agreementXinhua Top US official: Obama 'very pleased' with outcome of Mideast summit in WashingtonHa'aretz AFP -The Guardian -San Francisco Chronicle all 11,654 news articles »

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Brisbane Times

Volatile Political Climate Backdrop For US Elections Voice of America Photo: AP Former Gov. Sarah Palin speaks at the Glenn Beck "Restoring Honor" rally in front of the Lincoln Memorial in Washington, Saturday, Aug. 28, 2010. 2010 has already proven to be a volatile political year in the United States. ... Court ends Tea Party's hopesDetroit Free Press Justices rule against Tea PartyThe Detroit News How the midterm campaign will play outWashington Post FOXNews (blog) -Reuters -Tucson Citizen all 199 news articles »

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Xinhua

Thousands protest deportations of Gypsy immigrants in France Los Angeles Times Authorities say 77000 protesters hit the streets in 130 towns across France in opposition to Sarkozy's program to dismantle illegal Roma camps. By Devorah Lauter, Los Angeles Times With the fast beat of Gypsy music rousing the crowd over loudspeakers, ... Nationwide demonstration in France to protest Sarkozy's security measuresXinhua French protest over Roma expulsionsAljazeera.net In pictures: French Roma protestsBBC News Wall Street Journal -Reuters -Sky News all 404 news articles »

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FOXNews

Fire Damages Sanitation Department Facility On Pier NY1 City fire marshals were investigating Saturday the cause of a three-alarm fire that damaged Department of Sanitation trailers on a pier by Manhattan's West Side Highway that afternoon. Fire officials said the flames broke out around 3:30 pm on Pier 97 ... Firefighters Contain Blaze on Manhattan PierNew York Times NYC sanitation pier, trash trailers catch fireThe Associated Press West Side Pier Garbage Facility Engulfed in FlamesDNAinfo Gothamist -Wall Street Journal (blog) -CBS New York all 150 news articles »

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