Investigation on Rates of a Reaction Essay Example for Free

Investigation on Rates of a Reaction Essay We are changing the concentration of the acid solution to see which has a quicker reaction with the metal. To keep it a fair test I will be keeping the following constant:    The length of the magnesium   The volume of the acid The temperature of the solution and the laboratory in which we carry out the experiment I will not be using a catalyst Prediction Based on my scientific knowledge I predict that as the number moles in a solution (unit at which we measure concentration) increases the speed at which the reaction occurs will also therefore the higher the concentration the faster the reaction takes place. In this view by doubling the concentration theoretically the time taken should half. Apparatus Here is a list of equipment that I will be using during this experiment:    25 x test tubes 5 x test tube racks   500 ml x hydrochloric acid (HCl)   160 ml x distilled water   25 cm x magnesium ribbon (mg) 1 x medium beaker   1 x bung   1 x measuring cylinder   1 x scissors   1 x stop watch   1 x pencil, pen (to label the test tubes) and table for results Method Here is an account of how I will be doing the actual experiment (based on the pilot experiment). Collect the test tubes and place them in the racks, cut magnesium ribbon and collect the acid and distilled water, measure out the following:    20 ml of acid (2 moles of acid)   17. 5 ml of acid and 2. 5 ml of D. water (1. 75 moles )   15 ml of acid and 5 ml of D. water (1. 5 moles )   10 ml of acid and 10 ml of D. water (1. 0 moles ) 5 ml of acid and 15 ml of D. water (0. 5 moles ) Prepare each 5 times and pour into test tubes Use one rack per concentration.   Once each is measured place a bung in the starting test tube and shake vigorously to thoroughly mix the solution. Place one piece of magnesium ribbon into the solution and start the stop clock. Stop the clock once the solution has completely finished reacting (no bubbles are being produced) with the magnesium and record.   Repeat this for all 25 test tubes Calculate the average for each set of results Plot this on a graph NB. D. stands for distilled. In order to ensure that this experiment is safe I will be doing the following: Any bags must be placed securely under the desk.   The experiment must be performed in the centre of the table.   I will only add acid to water. We will be wearing safety goggles at all times. Towels and running water will be nearby in case of any acid spills. Ms Pinion will be supervising all of the experiments. Below shows a diagram whilst the experiment is being performed: Results Concentration (moles) Time for try 1 (secs) Time for try 2 (secs) Time for try 3 (secs) Time for try 4 (secs) Time for try 5 (secs) Average time (secs) 0 Analysis. Looking at the graph I can see that as the concentration increases the time taken for the reaction to occur decreases therefore the rate of reaction increases. As I said in my scientific knowledge this occurs because as the concentration increases obviously the number of particles within the solution also increases. With more particles the chances that the HCl molecules will collide with the magnesium molecules and have enough activation energy increases and so the rate of reaction will increase. You could also read the graph another way, as the time taken for the reaction to occur increases the concentration decreases. The reason behind this is that with fewer molecules of HCl in a weaker acid the fewer the chances that the particles will collide with the magnesium molecules and so the rate of reaction decreases. Between the concentrations 0. 5 moles and 1. 0 mole the line was quite steep; there was a rapid decrease in the time taken for the reaction to complete. A possible reason for this could be that 1. 0 moles is double 0. 5 moles and so because there is double the amount of molecules theoretically the time taken at 1 mole should be half of that taken at 0. 5 moles. My prediction was correct because as the concentration increased the time taken for the reaction to occur decreased therefore resulting in a higher rate of reaction. Evaluation Looking at my results I think that they are quite accurate, the graph is a smooth curve joining 4 out of the 5 points, I received one anomalous result. This was for 1. 5 moles, the result I got was 48 seconds when it should have been 32 seconds. A possible reason for the anomaly could be from the following:-   Too little acid was placed in the solution and so the concentration could have been less than originally expected. Human reaction time is always delayed and so the reaction may have stopped seconds earlier.   The equipment I used may not have been accurate enough, for example I used a measuring cylinder when I could have used a burette to measure the acid and the water.   I judged whether the reaction had finished by looking when it had stopped bubbling; obviously this can be difficult to keep accurate as it is not always easy to tell, in a slow reaction for example bubbles can be produced very slowly, if there is a large gap in time when no bubbles are produced I could assume that the reaction had stopped when it hadnt making the reaction unfair. To over come this, instead I could measure the amount of hydrogen produced in a certain amount of time; to do this I would need a gas syringe. I believe that I repeated my results a suitable amount of times to get a reliable average and I think that my range of results was enough to complete the investigation with suitable proof. Yet based on the information above I could say that the data may not be sufficiently accurate to support a conclusion, despite the fact that my results were as I had expected the question arises that if my results had have been more precise would my results have been different. My result didnt follow a specific pattern but they did decrease as I increased the concentration. If I were to develop this investigation further I would almost certainly repeat the experiment taking into account the information above (possible reasons for the anomalie), by doing this I will be able to establish the whether or not the investigation that I performed this time was inaccurate. If I were to explore other areas of this topic I would look at different metals and how they affect the rat of a reaction, different acids and see what effect they have and I would possibly look into one of the aspects of my scientific knowledge.

Plagiarism and the Internet :: Cheating Education Essays

Plagiarism and the Internet The consequences of plagiarism are both legal and academic. Plagiarism has been a concern in America since the founding fathers wrote the Constitution empowering the Legislative branch to protect intellectual and creative works. Today plagiarism can be easily accomplished due to the World Wide Web. If people violate copyright laws, they are subject to fines and imprisonment. When people choose to plagiarize, they are restricting their level of academic learning. The people who have done the research and posted it on the web will not receive the credit that they deserve. To plagiarize is â€Å"to take ideas or writings from another and pass them off as one’s own† (Webster’s New World Dictionary). It is extremely easy to access information on the World Wide Web. The proliferation of computers and printers in libraries, schools, and homes has enabled voluminous information to be accessible to all. This access has tempted some people to use othersâ⠂¬â„¢ writings as their own. Many students today find it easy to plagiarize in order to fill up pages, and hand a paper in on time. â€Å"A national survey published in Education Week found that 54% of students admitted to plagiarizing from the Internet† (â€Å"Plagiarism.org†). While this may seem like a good idea to some, the grade is not worth the consequences. When students plagiarize, they no longer read or sort the material; they are simply printing out someone else’s work. Those students are basically going through the motions of learning. Another danger of plagiarizing is that you may be using false information from the Web. Students who thoroughly research and sort the information are helping themselves. Evaluating the information and drawing their own conclusions improves the student academically and intellectually. Persons are usually penalized for plagiarism in their academic setting. In most universities a person will receive an F for the class without refund. Sometimes the person may face monetary fines and will be banned from extracurricular activities (â€Å"Plagiarism Q&A†). The College of New Jersey has little tolerance for those who plagiarize. If a student is caught plagiarizing, the faculty member will first decide whether or not the student’s violations were intentional.

Military Action

In my essay I will investigate the phenomenon of war, starting with its theory and definition, and going to its factors and the principles of its justification, and then finishing with its costs. In particular, I will point out the factors of a just war and support each of them with the necessary argumentation. Also, I will describe the factors that must be considered when military action is justified.And finally, I will mention direct and indirect costs of war. On the whole, the purpose of my essay is to explore on the concept of just war, using the terms: just war and the theory of just war and applying the concepts: concepts of sovereignty, state and nation. In order to provide a necessary scientific ground for my investigation, I will cite the information from reliable sources:   The Internet Encyclopedia of Philosophy, Just War Theory† and the War on [T]error by Brian Moresonner, and others.First, according to Brian Moresonner, the roots of the term â€Å"Just War† go back to the Ancient times of Greeks and Sumerians and throughout the history of mankind the concept of just war has been developed [3], eventually growing up into a separate theory with its own principles and traditions. Moresonner in his â€Å"Just War Theory† and the War on [T]error (2004) points out that meaning of â€Å"Just War† â€Å"usually evolves when two or more similarly cultured peoples engage in combat over and over, as they share the same cultural values the two or more peoples set up conventions and perhaps even codes of what is acceptable in combat with each other.† [3].At the same time, The Internet Encyclopedia of Philosophy   (2005) holds that the theory of just war â€Å"deals with the justification of how and why wars are fought.† [4]. This justification can be of two kinds: historical or theoretical. [4]. Theoretical justification deals with ethics of forms of warfare and war. [4]. On the other hand, the historical aspect just ifies rules and agreements applied in different wars across the ages. [4].Second, due to The Internet Encyclopedia of Philosophy (2005), every just war is characterized with a list of factors, which generally should contain the following:–   Just cause, which means a cause of aggression can be considered just if it is a response to â€Å"a physical injury (e.g., a violation of territory), an insult (an aggression against national honor), a trade embargo (an aggression against economic activity), or even to a neighbor’s prosperity (a violation of social justice).† [4].–   Proclamation of war made by a proper authority. This factor implies the relationship between government and people, and is closely connected with the concepts of sovereignty, state and nation. In simpler and more general terms, government, as an organ of authority in a state, can declare war. [4].–    The possession of right intention. This factor forbids pursuing self-intere sts or aggrandizement for the sake of justice in the war. [4].–   A reasonable chance of success. This factor means that just cause and right intention are insufficient for a just war. The sides involved should calculate al the benefits and the costs of the campaign.–   Proportion in the means which are used. This factor requires that the goal of the war â€Å"must be proportional to the other principles of just cause.† [4]. For example, if a nation A invades a land which belonged to the nation B, nation B has right to take the land back. It will be a just cause. But at the same time, the counter attack of B should be proportionate and aim only at retrieving the land. [4].Third, in case when the factors of a military action are taken into consideration, those ones, which will justify it, should be based on the right of self-defense. This right was established by the UN Charter, Geneva and the Hague conventions and it states that a nation can start a war is i ts sovereignty is endangered.   So, to my mind, justifying factors should involve :1) Direct aggression against the country, or its allies, or those countries which are not able to protect themselves against a direct aggression. Thus, in the U.S.A. current ideology suggests self-defense as a right response to direct aggression. The main concerns of U.S. ideology here are freedom and safety of its citizens, and proportional intervention against the defender. For example, such war in self-defense against Japan was declared by American policy on December 7, 1941.2)   Indirect aggression against the country. However, this premise is the most difficult to evaluate. This difficulty comes out of ideological divergences of all the countries in the world. In other words, to understand how a particular country would be engaged in a war based on this premise, one must really know the ideology of this country. For instance, all the military actions of the U.S.A. initiated after the World Wa r II are considered to be based on U.S. response to indirect aggression. In this case the term ‘indirect aggression’ implies the controversy between capitalist and communist regimes and the opposition of American democracy to dictatorship of the former U.S.S.R. and its allies.Finally, each war has its direct and indirect costs. To my mind, direct costs of war concern its human casualties and money spent by the parts involved. For example, it was estimated that during World War II 20 million o soviet people died, and the cost of Iraqi war or America has already overreached 2 million dollars. On the other hand, there are indirect costs of wars, which generally can be seen in postwar period. Among such costs I can mention: refugees and immigration, poverty, collapse of economic and political systems, epidemics, pollution of environment, etc.Bibliography:1)   Carl Schmitt, The Concept of the Political, George Schwab, trans., Chicago: The University of Chicago Press, 1996, p. 26.2) Mark Osiel, Obeying Orders: Atrocity, Military Discipline, and the Law of War, New Brunswick: Transaction Publishers, 1999, p.100.3) Moseley Alexander. Just War Theory. The Internet Encyclopedia of Philosophy. 2005. 28 Aug. 2005 4)  Plaff Tony. Peacekeeping and the Just War Tradition. US Army War Colege. September, 2000

Original Sin - 1617 Words

Doctrines are used as a foundation to Christian beliefs. They serve to many churches as fundamentals in the direction their members chose to live their lives. It is important to understand the historical backgrounds of the doctrines that pertain to ones particular beliefs. I will be discussing this very information for the doctrine of original sin. The doctrine of original sin mostly pertains to the Roman Catholic religion. I will be covering when, where, and why the doctrine was originated. Original sin is the theory that every man is born into sin because our mother and father have sinned. The definition given by the Catholic Encyclopedia is: (1) the sin that Adam committed; (2) a consequence of this first sin, the hereditary stain†¦show more content†¦So then it is no longer I that do it, but sin which dwells within me. For I know that nothing good dwells within me, that is, in my flesh. I can will what is right, but I cannot do it. For I do not do the good I want, but t he evil I do not want is what I do. Now if I do what I do not want, it is no longer I that do it, but sin which dwells within me. So I find it to be a law that when I want to do right, evil lies close at hand. For I delight in the law of God, in my inmost self, but I see in my members another law at war with the law of my mind and making me captive to the law of sin which dwells in my members. Wretched man that I am! Who will deliver me from this body of death? (Romans 7:15-24) The solution to this problem is stated by Paul in these terms: For God has done what the law, weakened by the flesh, could not do: sending his own Son in the likeness of sinful flesh and for sin, he condemned sin in the flesh, in order that the just requirement of the law might be fulfilled in us, who walk not according to the flesh but according to the Spirit. (Romans 8:3-4) Though the New Testament doctrine of original sin is most clearly expressed by Paul, it is also implicit in the teachings of Jesus: for example in such words as: And Jesus said to him, Why do you call me good? No one is good but God alone. (Mark 10:18) and I am the vine, you are the branches. He who abides in me, and I in him, he it is that bears much fruit, forShow MoreRelatedThe Sin Of The Original Sin961 Words   |  4 PagesWhen I think of the Original Sin, I think of the world’s first sin—the patriarchy and matriarchy sin. Today, the world consists of sinners begging the Lord for forgiveness—thanks to Adam and Eve. How different would the world be if Adam and Eve did not bit the forbidden fruit? Would such sin still exist today? â€Å"If we confess our sins, he is faithful and just will forgive us our sins and purify us from all unrighteousness† (1 John 1:9 King James Version). It is important to keep in mind that no humanRead MoreThe Doctrine Of Original Sin2199 Words   |  9 PagesThe doctrine of original sin refers to in Christian doctrine, â€Å"the condition or state of si n in which each human is born; also the origin of this state.† It is often viewed as one of the most difficult parts of Christian theology. The idea that Adam’s sin was imputed to the whole human race and that we are personally implicated with Adam, is a good example of a doctrine that has generated a great deal of debate. Some theologians go as far as to view the doctrine of original sin as ‘offensive’ orRead MoreA Statement on Original Sin Essay593 Words   |  3 PagesA Statement on Original Sin First articulated by Augustine (A.D. 354–430), the doctrine of original sin holds that all of Adam’s descendants inherit the guilt of Adam’s sin and thus incur the punishment for Adam’s sin. Inheriting Adam’s guilt at birth, then, presumes one guilty before God at birth and destined for hell. This is the basis for the Catholic need for infant baptism, for the doctrine of the Immaculate Conception (that Mary herself was uniquely conceived free of Adam’s guilt), andRead MoreEssay on Original sin1612 Words   |  7 Pageswill be discussing this very information for the doctrine of original sin. The doctrine of original sin mostly pertains to the Roman Catholic religion. I will be covering when, where, and why the doctrine was originated. Original sin is the theory that every man is born into sin because our mother and father have sinned. The definition given by the Catholic Encyclopedia is: â€Å"(1) the sin that Adam committed; (2) a conseq uence of this first sin, the hereditary stain with which we are born on account ofRead MoreThe Doctrine Of Original Sin1537 Words   |  7 PagesProtestant Reformation. Regarding original sin and hamartiology, Augustine is the fountainhead, for both Protestant and Roman Catholic’s; however, he was not the originator of the doctrine. Depicting humankind’s solidarity with Adam preceded the teaching of Augustine, but none discussed humanity’s willful complicity in Adam’s sin as vividly and thoroughly. Imperative to understanding the doctrine of original sin is establishing the distinction between evil and sin, being cognizant not to conflateRead MoreTaking a Look at the Original Sin1159 Words   |  5 PagesOriginal Sin In the beginning God created the heavens and the earth ex nihilo (out of nothing). After God created the earth he made â€Å"the adam† out of the dust of the earth and by breathing into his nostrils made the man living. Everything God created was Good, the man was also good but only with woman was man complete. God created woman from the rib of Adam. Both Adam and his partner Eve were both placed in the Garden of Eden where they were to live and eat from, everything in the Garden exceptRead MoreTemptation, Blame, Forgiveness, And An Apple Essay1378 Words   |  6 Pages2016 Temptation, Blame, Forgiveness, and an Apple Genesis-- the book of the beginning of man, according to some religions. In this book, the age old story of Adam and Eve is recorded. The book tells of the first two humans on earth performing the original sin by eating an apple from the Tree of Knowledge in the sacred Garden of Eden. While this story may seem clear cut, humans always have different perspectives on the messages to take away from stories. Sometimes, these differing views are expressedRead More Christianity vs. Islam Essay839 Words   |  4 Pagesthat man is sinful and can never inherit eternal life in the presence of God as a result of the sins of our first parents, Adam and Eve, as well as our own personal sin. Therefore it became necessary for God to become man in the person of Jesus Christ, who as the Son of God was sinless and unblemished. His purpose was to suffer and die in atonement for the sins of all whom accept his sacrifice for sin. Muslims believe all of God’s prophets, who include Abraham, Noah, Moses, Jesus, and MuhammadRead MoreAugustine’s Conception of Sin in Confessions 1700 Words   |  7 PagesIn this paper I will write about Augustine and his thoughts and ideas on sin in the Confessions, where sin originates and whether or not I believe that Augustine’s conception of sin has a place in modern society. From all of this I will conclude that through Augustines work and findings, Augustine’s conception of the human person and their human actions are somewhat relevant today, due to the fact Augustine set a standard for what human nature is, known as the ability to desire, think and do, yetRead MoreJohn Calvins Teachings Essay1025 Words   |  5 Pageseveryone. He asks, â€Å"But if all whom the Lord predestines to death are naturally liable to be sentenced to death, of what injustice do they complain?† In the most impartial understanding of justice, all are abhorred by G od because of original sin. It’s the original sin that everyone deserves to be predestined to reprobation. The mystery of why God determined it to be favorable to his glory, to allow the fall, but it’s just that he should elect some to reprobation as the conclusion. â€Å"Humans fall,