Sustainable Chemistry Terry Collins* Chemistry has an important role to play in achieving a sustainable civilization on Earth. The present economy remains utterly dependent on a massive inward flow of natural resources that includes vast amounts of nonrenewables. This is followed by a reverse flow of economically spent matter back to the ecosphere. Chemical sustainability problems are determined largely by these economy-ecosphere materials flows (see the figure‚ below)‚ which current chemistry education
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with excess phosphorus‚ what mass of tetraphosphorus decoxide (P4O10) would be produced. KClO3 (s) + P4 (s) → P4O10 (s) + KCl (s) Answer: 36.8 g P4O10 Stoichiometry • In the real world‚ reactions do not always have 100% efficiency. • Often‚ use an excess of one of the reactants (usually the cheaper one). • Limiting Reactant – reactant that will be totally consumed. • Excess Reactant – will not be totally consumed; will have left over. • The maximum amount of product (theoretical yield)
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CHEMISTRY OF LAETRILE ( AMYGDALIN / VITAMIN B17) AUTHORS: Audrey De Jesus Rowie Joy Pilapil Shariel Eunice Juanillas Polytechnic University of the Philippines College of Science Department of Nutrition and Dietetics Sta. Mesa‚ Manila ABSTRACT Vitamin B-17‚ commonly known as "Amygdalin”‚ is a plant substance found naturally in raw nuts and the pips of many fruits‚ particularly apricot pips‚ or kernels. It is also present in plants such as lima beans‚ clover and sorghum. Laetrile‚ on the other
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THE CHEMISTRY OF LIFE (Review 1-7) I. Basic Chemistry A. Elements 1. Definition- an element is a substance composed of a single type of atom 2. Major elements of the human body 3. Trace elements of the body B. Atoms 1. Definition- the atom is the smallest part of an element which cannot be broken down further by ordinary chemical means. Atoms are composed of protons‚ neutrons and electrons. 2. Particles that make up atoms
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Chemistry is one branch of knowledge that grew from human curiosity about the world and has played a central role in the development of the modern world. Chemistry is the study of the composition of matter‚ the stuff things are made of‚ and the changes that matter undergoes. Now‚ we may not think chemistry plays such a big role in our life but it perhaps more than any other branch of science has bettered our lives. Almost anything we touch today has benefited from chemical technology‚ and there for
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CHEMISTRY PROJECT :AIM: TO COMPARE RATE OF FERMENTATION OF GIVEN SAMPLE OF WHEAT FLOUR‚GRAM FLOUR‚RICE FLOUR AND POTATO. SUBMITTED BY :- NAME: Shreyas kelkar CLASS:XII A ROLL NO: 26 INDEX # AIM # CERTIFICATE # ACKNOWLEDGEMENT # DECLARATION # OBJECTIVE # INTRODUCTION # MATERIALS REQUIRED # PROCEDURE # OBSERVATIONS # BIBLIOGRAPHY CERTIFICATE This is to certify that this project is submitted by SHREYAS KELKAR to the chemistry department‚ KENDRIYA VIDYALAYA NO. 1‚ INDORE was carried out
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Case Study: Wal-Mart June 12‚ 2012 � This case study is based upon the case article by Peter A. Stanwick and Sarah D. Stanwick titled; ’Wal-Mart: But We Do Give Them a 10 Percent Employee Discount ’‚ in which addresses the ethical issues facing Wal-Mart. According to Stanwick and Stanwick (2009‚ p. 409)‚ the culture "has created a number of twenty-first-century problems for Wal-Mart." Summary The authors ’ viewpoint is that of the Wal-Mart employees are not all treated equally according to
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Explain the effects of the Purges? Introduction The Great Purge was a campaign of political repression in the Soviet Union orchestrated by Joseph Stalin from 1934 to 1939. It involved a large-scale purge of the Communist Party and government officials‚ repression of peasants and the Red Army leadership‚ and widespread police surveillance‚ suspicion of "saboteurs"‚ imprisonment‚ and arbitrary executions. 1st Para Scientists‚ Doctors and Engineers‚ were heavily targeted‚ imprisoned and killed.
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Chemistry and cosmetics Cosmetics have been around since almost the beginning of time. Egyptian women used kohl to darken their eyelids‚ Cleopatra was even said to have bathed in milk to achieve a soft smooth completion. In Greece‚ women used lead carbonate (a white powder) to obtain a pale complexion‚ which probably wasn’t worth it seeing how it cost them their lives! Anyway‚ cosmetics are no modern phenomenon! Today it is a big business‚ making about $12 billion
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ukThis essay is based on a clinical experience within my branch of Adult nursing. I will explore how patients Activity of Daily Living (ADL) needs have been met for hygiene‚ elimination‚ nutrition and hydration. I will also demonstrate how the student has practiced in a non discriminatory manner. The four ADL’s I am basing my essay on are part of the twelve Activities of Daily Living model (Roper et al‚ 1996). As the NMC states you must always make the care of a patient your first concern and always
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