J. Diamond’s Collapse: Harappa Throughout the course of history‚ major complex civilizations have always found themselves in a state of decline‚ and possibly even collapse. In “Collapse: How Societies Choose to Fail or Succeed” Jared Diamond lays out the questions and issues and issues at the foundation of his theory on the collapse of societies. Diamond uses five factors that could contribute to the collapse of a society: damage that people in inadvertently inflict on the environment‚ climate-change
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experiment is to convert copper metal through a series of intermediate copper compounds back into copper metal. By weighing the copper at the beginning and at the end of the experiment the percentage yield can be determined. Method: The experiment was carried out as outlined in the practical manual. Results: Table: showing masses: Mass copper wire 0.2510 Mass crucible 28.9257 Mass watch glass 19.6213 Mass watch glass + copper 19.7890 Mass copper product 0.1677 Calculations:
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Moles of Iron and Copper Lab Data and Observations Before the reaction: Mass of empty‚ dry beaker: 153.44g Mass of beaker + copper (II) chloride: 161.44g Mass of two iron nails: 7.27g After the reaction: Mass of two iron nails: 6.29g Mass of beaker + copper (dry): 154.50g Questions and Calculations 1. a) Mass of two iron nails before the reaction – Mass off two iron nails after the reaction = Mass of iron used in the reaction = 7.27g – 6.29g = 0.98g
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sustained have learned from the ones that have collapsed. They learn not to make the mistakes those that have collapsed have made‚ they improve and adapt. Some use the mistakes of others to make them collapse so they can sustain. By knowing what they need to do to improve‚ they can make sure that they don’t collapse. Civilizations sustain with a social structure‚ a stable government‚ and a culture to prevent chaos and create trust. All civilizations have had its people divided by certain ways to help the
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Colony Collapse Disorder is a phenomenon‚ which happens when the majority of the worker bees abandon a queen and vanish. They also leave behind a lot of nourishment and nurse bees to look after the staying immature bees and the queen. The hives cannot support themselves without worker bees‚ so they have chance to die. Colony Collapse Disorder have declined significantly over the last 5 years. It was already known in the apiculture field as different names. Since the great number of disappearance
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At present‚ the raw materials to refine copper in China mainly are towanite‚ chalcocite‚ bornite‚ malachite and etc. According to the technical conditions of smelting‚ the copper ore can be divided into three classes based on the proportion of copper oxide and copper sulphide‚ that is‚ sulfide ore‚ which contains less than 10% copper oxide；oxidized ore‚ which contains more than 30% copper oxide; mixed ore‚ which contains 10%~30% copper oxide. Copper is one of earliest metals that be found and used
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In the experiment‚ synthesis of copper compounds‚ the purpose was to recover the original amount of copper after series of chemical reactions. Then returning the copper back to its original form. The copper wire originally weighted 1.0099 g‚ but after the copper was transformed into Cu(OH)2 to CuO to CuSO4 and finally into Cu‚ the mass of the recovered copper was 1.1023g; the percent yield was 109%. Since the percent yield is more than 100%‚ an error must have occurred somewhere in the lab. A possible
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The Book I Got Trapped In In the middle of the night I heard a noise I woke from my slumber to see all sorts of weird creatures‚ where am I‚how did I get here‚ how do I get home. I started to wonder around trying to find my way home when I realized I was in a fairytale I read a few days before. I keep on moving forward until I ran into a talking frog bubbles. Bubbles said to listen close because he would only say this ones he said to find the weeping willow tree with a star in it and find the
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In Copper Sun‚ Amari is a happy teenage and she is a slave. She was engaged to the most handsome man in her African village. One morning Amari goes outside and her little brother kwasi was hanging from a tree being silly and Amari goes to get her mom some vegetables for breakfast and out of nowhere white men enters Amari’s village setting things on fire and killing people. After a while then men took chained and shackled her and put her into a slave ship. A few weeks later Amari was sold to a man
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Analysis: Copper Lab 1) Calculate the mass of the copper that was recovered 2) Use the formula shown below to calculate the “percent of recovery” of copper for your experiment. 3) Use the proper symbol and formula to write balanced equation for each of the five copper reactions‚ include state symbols. 4) Classify each of the five copper reactions. (Refer to the above order‚ please!) A) Single Displacement B) Double Displacement C) Decomposition D) Double displacement E) Single Displacement
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