EXPERIMENT 7: PERCENTAGE OF OXYGEN IN KClO3 Introduction: In this experiment you will determine the percentage of oxygen in potassium chlorate. You will calculate the theoretical value from the chemical formula and compare your experimental value to the theoretical value. Background: When potassium chlorate (KClO3) is heated‚ it undergoes chemical decomposition. Oxygen gas (O2) is given off and potassium chloride (KCl) remains as the residue. The equation for the decomposition of potassium
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Experiments: Doctors‚ Experiments‚ and Results Melissa Anjeanette Edwards POLYTECH High School of Kent County‚ Woodside‚ Delaware Abstract During World War II experiments were done on the prisoners of war in Nazi Germany. Doctors for these camps came in all shapes and sizes including former S.S. Troops‚ Women‚ and a variety of prisoner doctors. The experiments differed as much as the doctors themselves; however they stayed the same in one factor‚ medical curiosity become killing in atrocious
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position‚ experience a restoring force‚ F‚ proportional to the displacement‚ X‚ according to Hooke’s Law; F = – KX = mα …………………………………. Where‚ F = the restoring force used to displace the mass. K= the spring constant. X = the displacement of the mass with respect to the equilibrium. The most commonly encountered form of Hooke’s Law is probably the spring equation‚ which relates the force exerted by a spring to the distance it is
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Throughout the experiments the size of the balloons stayed about the same size except for in experiment 3. Also the bottles that had more sugar had a stronger scent of alcohol and also contained more foam on top of the liquid. All yeast in each of the bottles seemed to have fermented at the same time and stopped/slowed down‚ the growing process‚ at the same time. Bottle 3 also would always overflow and the foam would fill the ballon in every experiment. Another trend with bottle 3 was that in the
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9.81 m/s2 Time: t=2ya t= 2(0.97m)9.81m/s2 t= 0.44 s Davg= (D1+D2+D3+D4+D5)/n = (2.146m+2.235m+2.234m+2.222m+2.225m)/5 = 2.212 m Vox= Davgt Vy = Vosinθ-gt Vo = gxsinθcosθ = 2.214m0.44s = 0-(9.81m/s2)(0.44s) = 9.81(2.62)sin45(cos45) = 5.032 m/s = 4.312 m/ = 7.17 m/s Discussion: The two pictures below demonstrate the calculations
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Abstract The aim of the study is to discover the effect caffeine has one ’s short term memory. The method used was a mixed design‚ a combination of the repeated measures and independent measures designs. The participants used were chosen from a sample opportunity‚ and all were twelfth grade Biology students. The results indicate that the lowest average score was that of the experimental group‚ after
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FEASIBILITY STUDY CHAPTER I INTRODUCTION This feasibility study aims to rationalize information of a proposed business in order to provide a clear rationale of basic factors in marketing which includes the strength and weakness in a venture and the opportunity and threat that is presented by the environment. Background of the Study Food is the primary necessity in the world. It is usually of plant and animal in origin which is consist and contains essential nutrients ingested and assimilated
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market. Otherwise‚ they could fail to sustain their existence. For the success and next stages of development in this market‚ creation and innovation became most important factors. One of major smart phone competitors‚ RIM (Research in Motion LTD.)‚ known as BlackBerry especially emphasizes importance of innovation as we can see the name of company. For the last decades‚ most of electronics companies had focused on mass production‚ thus they paid attention to develop specialized machines
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Psychology Today Volume 3‚ Episode 5 Submitted: January 18th‚ 2003 First Revision: January 28th‚ 2003 Second Revision: February 3rd‚ 2003 Accepted: February 20th‚ 2004 Publication Date: February 23rd‚ 2003 Does Eating Chocolate Cause Acne? Victor Seo Toronto University ABSTRACT It is often said that eating chocolate will give you acne. To further this idea‚ 400 students from high schools are divided into 4 groups and each group is given different amounts of chocolate daily
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Dictionary.com") Isaac Newton is one of the many people that have been honored for their contribution to our society. Isaac Newton was born in the small village of Woolsthorpe-by-Colsterworth‚ Lincolnshire‚ England on January 4th in the year of 1643. He was born to Hannah Ayscough and Isaac Newton. Isaac Newton Sr. died before the birth of Isaac Jr. Isaac’s
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