Acid rain is a rain or any other form of precipitation that is unusually acidic‚ meaning that it possesses elevated levels of hydrogen ions (low pH). It can have harmful effects on plants‚ aquatic animals and infrastructure. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide‚ which react with the water molecules in the atmosphere to produce acids. Governments have made efforts since the 1970s to reduce the release of sulfur dioxide into the atmosphere with positive results. Nitrogen
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Staying neutral turned out to be hard to maintain for the U.S. President Wilson first tried to limit the financial involvement in the war by banning American bank loans to the other nations. The Secretary of State believed the ban would bring the war to a quicker
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Should there be Separate Sex Classrooms? Emily Dodson 5/1/11 Period 7 In 2000‚ a concerned principal at Thurgood Marshall Elementary school in Seattle Washington was alarmed by the amount of office referrals he was seeing daily as well as the poor standings his school was in‚ in comparison to national standards. Through one simple change he reported: “Overnight. The change in the atmosphere happened overnight.”(Wright). There was no need for new teachers‚ new kids‚ or a new curriculum
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Pakistan and Islamic Studies Project Report Pak-Indo Separation Group Members * EE123016 Waqas Akhter * EE123117 Hina Ashiq * EE123003 Samina Khan * EE1230054 Irfana Altaf * EE123006 Usama Rehman Submitted To:Sir Hassaan Contents THE INDO-PAK PARTITION 4 Introduction: 4 Main Focus: 4 Map of Indian empire: 4 What was the partition? 5 Main Cause Of partition:- 5 Chart : 6 Problems during partition:
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on Organic Compounds‚ allows the students to be familiarized with different classification tests used for identifying the different classes of organic compounds; examine unknown compounds using appropriate tests; and identify functional group of an organic compound based on the tests performed. Several organic compounds with different functional groups were tested to identify the functional groups present in the compound. n-heptane‚ pentene‚ benzene‚ heptanol‚ sec-butanol‚ phenol‚ acetyl chloride
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Niacin (vit. B3) 0.282 mg (2%) Pantothenic acid (B5) 0.25 mg (5%) Vitamin B6 0.06 mg (5%) Folate (vit. B9) 30 μg (8%) Choline 8.4 mg (2%) Vitamin C 53.2 mg (64%) Vitamin E 0.18 mg (1%) Calcium 40 mg (4%) Iron 0.1 mg (1%) Magnesium 10 mg (3%) Manganese 0.025 mg (1%) Phosphorus 14 mg (2%) Potassium 181 mg (4%) Zinc 0.07 mg (1%) Since orange is a citrus fruit‚ it has 0.005 mol/L citric acid. Citric acid is a weak organic acid with the formula C6H8O7. It is a natural preservative/conservative
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Compound 50‚ like its known analogue 3‚ involves an α‚β-unsaturated ketone‚ an acid-sensitive reactant‚ which prevents its direct synthesis in presence of protic solvents by refluxing. Despite of this characteristic‚ 50 was formed smoothly in 5 minutes by grinding chemistry‚ solely as E-isomer‚ without any evidence of decomposition after 1H and 13C MNR analysis. This synthetic approach provides easy access to such α‚β-unsaturated N-acylhydrazones‚ which are building blocks in the synthesis of nitrogen-containing
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Identification of a Copper Compound by Percent Mass Unknown Compound: #9 Abstract: The objective of this experiment was to identify the unknown pure copper salt compound of #9. To do this‚ the mass of copper in the unknown was calculated and then divided by the mass of the whole compound to get the percent copper. The molecular weight was also calculated by dividing mass of copper compound used by moles of compound in unknown sample. The percent copper averaged out to 31.6% while the molecular
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environment as well‚ and once these environmental impacts begin to show themselves‚ we will know exactly how much the internet costs. 4. Morosov argues that ‘technology is never neutral’. Do you agree? Give some examples from the reading or your own experiences to either support or counter Morosov. In my opinion‚ technology is never neutral this is due to the fact that technology always has an environmental impact. Additionally‚ technology is generally used to perform a task whether that is to make a call
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Experiment 4 Synthesis of Salicylic Acid Introduction Throughout history‚ botanical extracts have been used as medicines. Approximately 30% of all medicines have a plant origin. This number increases to 60% if you consider medicines that at one time were derived from plants‚ but have been synthesized in the laboratory. Salicylic acid is a white crystalline compound that can be isolated from the bark of birch trees. Since it is a valuable substance that can be isolated from nature‚ it is called
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