Distant stars and distant galaxies aren’t completely featureless‚ but actually has specific spectral features. When we look at their spectrum‚ we can see an absorption of spectrum. Redshift and blueshift are two different terms that describe how the light changes as objects moves closer or further away from us. The reason that these two terms can describe whether or not objects moves closer or further away from us‚ is the fact that when a certain object in space is shifted to the red part of the
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When World War II ends the United States and the Soviet Union became enemies‚ better knows as the Cold War. It consisted on the constant tension between both countries in starting a war. Both sides had power in nuclear weapons which made people be afraid of the start of a nuclear war. Also both countries disagree in many things. The Soviet Union had a Dictator‚ one political party (Communist) and an economic system (socialism) in which the government run all the industries. USA had an elected president
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DETERMINING THE EQUIVALENT MASS AND DISSOCIATION CONSTANT OF AN UNKNOWN WEAK ACID BY TITRIMETRY INTRODUCTION Acids are substances that donate hydrogen ions and bases are substances that accept hydrogen ions. Acids and bases react with each other by transferring hydrogen ions. One way to distinguish an acid is by its equivalent mass‚ which is the number of grams of the acid needed to transfer one mole of hydrogen ion to a base. For a monoprotic acid‚ which only transfers one hydrogen ion‚ its
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Carbon Dioxide in Water under Constant Pressure Beijing World Youth Academy Subject: Chemistry Student name: YeiYoung Choo Candidate number: 000791 011 January 21‚ 2009 Teacher Helen Xu The Effect of Temperature on the Solubility of Carbon Dioxide in Water under Constant Pressure (Evaluated for Design) Research Question What is the effect of temperature on the solubility of carbon dioxide gas in de-ionised water under constant pressure? Introduction
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How successful can the management of fragile environments be‚ given the constant and increasing demand for their exploitation? A fragile environment is an area where the flora and fauna have adapted to a specific climate and evolved to occupy many different niches due to extremely high competition for resources. Furthermore due to the constant abiotic conditions‚ specialisation and symbiotic relationships have occurred to such a degree that even the slightest ecological or environmental disruption
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Experiment # 4: Dissociation Constant Weak Acids Introduction: The dissociation constants of weak monoprotic acids were determined with the aid of a buffer and pH meter. Experiment: This experiment was performed according to the procedures as provided in the Chemistry 111B laboratory manual: Po‚ Henry and Senozan‚ N. "General Chemistry Experiments Chemistry 111B"‚ 8th Ed.‚ 2004 Hayden-McNeil Publishing‚ pp 80-88. To determine the dissociation constants of weak monoprotic acids (HX and HY)‚ a buffer
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DETERMINATION OF ELECTRODE POTENTIALS N.M. PICART1 and A.J. EDUARDO2 1INSTITUTE OF BIOLOGY‚ COLLEGE OF SCIENCE 2INSTITUTE OF BIOLOGY‚ COLLEGE OF SCIENCE UNIVERSITY OF THE PHILIPPINES‚ DILIMAN‚ QUEZON CITY 1101‚ PHILIPPINES DATE SUBMITTED: 22 APRIL 2015 DATE PERFORMED: 15 APRIL 2015 ANSWERS TO QUESTIONS 1. Discuss the differences between galvanic and electrolytic cells. A galvanic cell uses a spontaneous reaction to generate electrical energy. In the cell reaction‚ some of the difference in
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Modern young women and their role in a society – challenges for feminism and a constant fight against social prejudices British young women as a subject of broad political interest became visible and significant in 1997 when New Labour came into power. It appeared as a novel phenomenon since it was all about “men’s’ world” before. The growing trend of feminism in a new liberal shape – encouraging women to get independent by means of achieving success and earning money‚ was well supported by press
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Abstract In this experiment‚ the Ksp for calcium sulfate dihydrate‚ CaSO4·2H2O‚ by titrating 4 times a calcium sulfate dihydrate solution with diprotic EDTA‚ H2(EDTA)2-. For each trial we found the Ksp by means of molarities and activities. The results for the Ksp using only molarities was very different than the Ksp using activities. The average Ksp using molarity only was 2.26 x 10-4 and the average Ksp using activity turned out to be 2.31 x 10-5. The actual Ksp however‚ is 3.14 x 10-5. A percent
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#1: The International Financial Environment. Explain how the international trade flows should initially adjust in response to the changes in inflation (holding exchange rates constant). Explain how the international capital flows should adjust in response to the changes in interest rates (holding exchange rates constant). International trade flows are the exchange of goods and services for money between different countries. It is referred to as sales which cross juridical borders. Inflation
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