Common Aspects of Acid Prehydrolysis and Steam Explosion for Pretreating Wood Hans E. Grethlein Michigan Biotechnology Institute‚ PO Box 27609‚ Lansing‚ Michigan 48909‚ USA & Alvin O. Converse Thayer School of Engineering‚ Dartmouth College‚ Hanover‚ New Hampshire 03755‚ USA Abstract The initial rate of hydrolysis using cellulase from Trichoderma reesei for various wood samples is directly proportional to the surface area available to the enzyme. Both dilute acid hydrolysis in a continuous
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The Witch Trials and McCarthyism There is little symbolism within The Crucible‚ but‚ in its entirety‚ the play can be seen as symbolic of the paranoia about communism that pervaded America in the 1950s. Several parallels exist between the House Un-American Activities Committee’s rooting out of suspected communists during this time and the seventeenth-century witch-hunt that Miller depicts in The Crucible‚ including the narrow-mindedness‚ excessive zeal‚ and disregard for the individuals that characterize
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Soccer season is about to start. This is Wally’s favorite time of year. Wally plays soccer professionally for FC Barcelona. He just joined the team after a great first season with Ajax. As Wally heads out to his first practice‚ he can’t wait to meet his teammates! As Wally gets closer to Camp Nou he gets more eager to play. After what feels like hours he finally makes it to the stadium. Once Wally walks into the training room his new team greets him. He gets tired of saying “it’s nice to meet you
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used (ml) | 30.6 | 30.2 | 30.0 | | | | | Acid to Base Ratio | 0.87 | 0.86 | 0.86 | Average acid/base ratio | 0.86 | | | | | Base to Acid Ratio | 1.14 | 1.16 | 1.17 | Average base/acid Ratio | 1.16 | Name: Jared Philip Condez Date Performed: June 28‚ July 2 & 5‚ 2013 Partner: Shiela Mae Molina Date Submitted: July 12‚ 2013 Experiment 3 ACID – BASE TITRATION I. Objectives * Determine the purity of Potassium Acid Phthalate * To titrate effectively
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(Fe3+ ) form. Ferric form is not usually absorbed in the body. In the stomach‚ there is low pH of 2 due to presence of gastric acids such as Hydrochloric and Ascorbic acids. These acids provide an acidic environment for reduction of ferric iron to ferrous (Fe2+). Ferrous iron can be absorbed in the body system. As in following equation of iron (iii) reaction with Ascorbic acid ‚ the product is iron (ii) chloride which is soluble 2 Fe3+ (s) + C6 H8 O6 (aq) → 2 Fe2+ (aq) + C6 H6 O6 (aq) + 2 H (aq)+
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Chemistry Research Paper What is an anti acid? According to Cindy Quarters (2010)‚ “Antacids are medicines that are taken orally to help relieve sour stomach‚ heartburn‚ or acid indigestion”. This medicine is available without prescription but it is needed to take the correct dose. The different types of anti acids include calcium carbonate‚ sodium bicarbonate‚ magnesium hydroxide‚ aluminum hydroxide‚ and dihydroxyaluminum sodium carbonate. The cost of the anti acid will depend on how effective it is‚
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substances. One way is based on their pH. Substances may be * Acid 2. Base 3. Neutral INDICATORS This is a substance which is one color in and acid and another color in a base. Indicators can ten be used to test for the presence of acids or bases in a substance. Some are available in paper form (litmus) and others in liquid form (methyl orange). INDICATOR | COLOR IN ACID | COLOR IN BASE | LITMUS |
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and psychotic break so he assumed that they were the work of evil and diagnosed them as such. During the Salem Witch Trials‚ there were more than 200 trials that took place. (Video‚ 2012) Out of the many trials that took place‚ 20 people were tried and found guilty and executed. However‚ 4 others who awaited trial died while waiting in jail. People who were on trial for being a witch was not allowed to have a lawyer represent them and were forced to represent themselves. Spectral evidence was allowed
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The Salem witch trials occurred around the 1690s in Salem‚ Massachusetts. Some young women started to have fits and their bodies would seize. These fits had seemingly no medical explanation‚ so the people of Salem deemed it witchcraft. The people of Salem then had to decide which people were witches. They accused both men and women of witchery‚ and when they were found guilty‚ they were hanged‚ but why were these people found guilty? The people of 17th century Salem were convicted of witchcraft due
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The purpose of this investigation was to determine which type of alcohol (ethanol‚ butan-1-ol‚ or propan-2-ol) contains the most energy per gram. It was expected that if we burn three alcohols (ethanol‚ propan-2-ol‚ and butan-1-ol) for 2 minutes‚ then butan-1-ol will release the most energy per gram (J/g) because butan-1-ol contains more carbon atoms than other alcohols which means more energy is required to break its chemical bonds and more energy will be released when new chemical bonds are formed
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