2C4H10O + 12O2 -> 8CO2 + 10H2O ΔH=973kJ d) According to the measured data‚ as the alcohol molecules become larger‚ the enthalpies of the combustion become larger too therefore‚ the bigger the molecule‚ the more energy is released. The prediction I made was correct. e) Sources of experimental error in this experiment can be if you didn’t measure the alcohol right after it was burned. If you spilled any alcohol. If you didn’t record the temperature after you put out the fire. f) Ethanol 498kJ/mol
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Lives of the Saints Lives of the Saints is a story that examines the complexities and tribulations of everyday life in a small town. Throughout the novel‚ we discover that even the most trustworthy and caring individuals live secret lives behind closed doors‚ and that the surface appearance of minor communities can be very deceptive. Some people spend their entire adult-lives trying to knock down these doors and discover the truth‚ but perhaps they are overlooking the key to the lock our
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The Science Behind Bubbles Bubbles are fascinating. They are used by children around the world as a source of entertainment. But‚ there’s more to them than meets the eye. The science around bubbles deals with chemical bonds‚ surface tension‚ air density‚ and more. The anatomy of a bubble seems simple‚ but it is actually very complicated. Bubbles are usually looked at as something very simple‚ but scientists think otherwise. Standard bubbles that you can make at home consist of soapy detergent
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Travelling has become an essential part of our lives nowadays . Only a short time ago ‚ pp usually travel on foot or by horse from place to place but it’s still inconvenient when travel for a long distance . Now everything has change ‚ pp can travel wherever they like in a shorter time than before . Travelling has many types such as travel by airway ‚ by seaway and by land according to their function The first type is travelling by airway . No one can deny that this is the fastest and safest kind
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CHAPTER 22 THE ATMOSPHERE‚ CLIMATE‚ AND GLOBAL WARMING _______________________________________________ MULTIPLE CHOICE QUESTIONS 1) _____ Long-term weather trends associated with a particular setting or location‚ for example arid conditions downwind of a large mountain range Answer: e 2) _____ Study of the global-scale connections between atmosphere‚ oceans‚ biosphere‚ climate‚ and the Earth Answer: a 3) _____ Computer simulations designed to predict changes in the atmosphere and in the
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Essays on the Origins of Western Music by David Whitwell Essay Nr. 36: Are Musicians Born or Made? For nearly 2‚000 years philosophers have wondered whether artists are born or made. In the case of musicians‚ the existence of thousands of music schools would seem to argue that musicians can be made‚ like engineers. Arguing against the importance of all that activity are the curious exceptions: famous musicians who cannot even read music. The latter include the most famous
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Significant Place is a paper that was designed to show one’s ability to use descriptive and figurative language. This essays main purpose was to let the reader know about a significant place by using descriptions about what you see. In this essay I really focused on showing the reader what the surrounding were and not telling. My significant place was Otto’s Place in Galena. I chose this place because this is where I have spent the last four years working. I know a lot of the place and have been
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Lecture 5: PRICE AND PLACE Price: - Define the pricing concept and explain different pricing methods ( cost oriented‚ competitor oriented and market oriented pricing) -Explain pricing strategies for new products( market penetration and market skimming) AND existing products. ( Understand condition and when we can use it) -Consider ethical issue in pricing ( don’t think it will be on the exam) PLACE: Define place(distripution) concept and explain the role of intermediaries in distribution
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Does science and technology always have a positive effect on society? Technology and society refers to cyclical co-dependence‚ co-influence‚ co-production of technology and society upon the other .This synergistic relationship occurred from the dawn of humankind‚ with the invention of simple tools and continues into modern technologies such as the printing press and computers. The academic discipline studying the impacts of science‚ technology‚ and society and vice versa is called (and can
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Many elements have contributed in the evolution of a constant changing society. Technology has been a huge instrument in society’s changes. Technology has opened the gates to unheard opportunities but at the same time‚ those same gates have allowed negative influences to occur within our society. Body image‚ transportation and social media are three outlets that technology has influenced both positively and negatively. Unrealistic expectations of body images pollute the minds of both young men
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