Stoichiometry and the Chemical Equation essays

Stoichiometry and the Chemical Equation essays The purpose of the laboratory is use our knowledge of stoichiometry in a hands-on experience. Stoichiometry refers to the calculations of the different quantities of the reactants and products of chemical reactions. In our experiment, we will use Stoichiometry to figure out the chemical equation of the reaction between hydrogen peroxide and bleach. For the experiment, a setup was made as follows: For each trial, the same amount of bleach was used: 4.0 mL. A specific amount of hydrogen peroxide was used, with each progressing trial using one more gram than the previous. After creating the setup shown above, the flask was stirred, causing the vial containing hydrogen peroxide to spill into the bleach. The reaction released oxygen gas that filled up in the 100 mL graduated cylinder. After the reaction finished, we observed the volume of the oxygen gas. With that data, we graphed the volume of oxygen gas produced versus the mass of the hydrogen peroxide used. Also, we will figure out the density of bleach by doing four trials of massing .500 mL of bleach. Set A Actual Mass of H2O2 Used (g) mL O2 Produced (mL) Note: for all trials, a volume of 4.0 mL of bleach was used. Mass of .500 mL of Bleach (g) Density of Bleach Solutions (g/mL) Average Density of Bleach = (.956 + .912 + .936 + .970) 4 = .944 g/mL From analysis of the graph, the equivalence point is (4.0 mL Bleach, 3.496 g H2O2) (From the Lab Manual) Bleach is 5.25% (w/w) NaOCl (From the Lab Manual) Hydrogen Peroxide is 3.00% (w/w) H2O2 4 mL Bleach x (.944 g Bleach mL Bleach) x (5.25 g NaOCl 100 g Bleach) x (1 mol NaOCl 74.44 g NaOCl) = 2.66 e-3 mol NaOCl (3.00 g H2O2 100. Solution) x (3.496 g Solution) x (1 ...

Assignment #1 Example | Topics and Well Written Essays - 250 words

#1 - Assignment Example In addition, the efforts put by the government during the period also made citizens appreciate institutions in general. The article is of the assumption that since the terrorist attack the society perception of the social circles and institutions has never changed. In the article The Strange Disappearance of Civil America, the American population is created with an image that depicts its ignorance on social relationships. Different from ancient American social setting, the modern day society do not value the significance of creating social relationships. Putman acknowledges this trend to numerous factors that derail persons from participating in social activities (2). For instance, the author cites the increased role of women, economic constraints, family acquaintances and technologically based distractions. According to Putman the trend is growing (10). Children are more inclined to television and other technological advances thus ignoring the importance of social circles. With society preferences changing to suit more personal needs, the traditional social setting would never be embraced by the modern

Reading Responses to a Poem Assignment Example | Topics and Well Written Essays - 500 words

Reading Responses to a Poem - Assignment Example The following paper is a response to "La Belle Dame Sans Merci" by John Keats. It explains the elements in the poem that are interesting or engaging. There are four major elements that can be discovered in this poem. They make it interesting and captivating. These include a theme of love, imagery, points of view and tone. Use of imageries is very strong in the poem. The diction has a deep literal meaning that the whole poem paints a mental picture. In stanza 4, the poet writes, â€Å"I met a lady in the meads, Full beautiful- a faery’s child,† which creates a mental picture of the extent of beauty of the lady (Enotes, 2011). This is mainly because of the use of a â€Å"faery’s child† which implies that the lady was very beautiful. This image portrayed is vital to an extent that the speaker is tricked into a trap by the lady. The tenth stanza has also an imagery which makes the poem interesting. This comes about as the ghosts of the lady’s past lovers caution the speaker of being duped, this last image is important since it connects the whole poem to the being state of the knight being alone. A theme of love used in this poem makes it quite captivating too (Melani, 2010). This is because love is a universal topic which the poet wisely chose since it connects with almost all of poem readers. In â€Å"La Belle Dame Sans Merci†, Keats elegantly portrays love as being imperfect at times. This is because of the misfortunes that the knight encounters after he falls in love with a lady who is alleged to be performing tricks to her lovers’ disadvantage. Tone is conveniently used in this poem. The dreamlike tone in the poem brings out a surreal environment. The poet then shift to a loving tone with his attitude in the 5th stanza. This is when he gives the lady some flowers and goes for a walk with her. The tenth stanza changes the tone

Does the rise of China represent a threat to U.S. national security Essay

Does the rise of China represent a threat to U.S. national security - Essay Example This continual rise in the global power of China is likely to represent a threat to U.S national security as the country tries to replace U.S as the world’s most powerful nation. Since the end of world war and more specifically in the last thirty years, China has recorded a tremendous growth in the size of its economy. The Chinese economy has been growing at a rate of 10%, which is three times to the global average, and as a result, it has grown to be the world’s second largest economy (Randau & Medinskaya 2015, p.15). In addition, it has claimed the top spot in various economic fields and it is actually revolutionizing the norm of the global economic sector. Since 2009 China displaced Germany as the world’s biggest exporter and it has maintained the position ever since. More automobiles are now being made in China than in any other country and at the same time, the economy has the largest market for new cars worldwide. Its automobiles sales have increased tremendously in the last five years and hence it has completely displaced U.S in the field of making and buying of automobiles. China has also grown to become the largest user of energy globally and actually its energy consumption rate is believed to have increased by more than a hundred percent in the last decade (Hinrichs & Kleinbach 2012, p.15).Majority of this huge demand comes from the manufacturing sector of the country which has largely increased and diversified its operations. Additionally because the standards of living of the people have improved, their energy consumption has also increased since they are able to purchase a wide variety of domestic appliances. All these among other factors have contributed to the high rate of Chinese economy and projections show that the growth of the country economically is likely to continue increasing in the forthcoming years. It has actually been predicted that by 2020, China will be the largest economy in all spheres and U.S is likely to

AN EXAMINATION OF THE EXTENT TO WHICH IMMIGRATION AND ETHNIC RELIGIOUS Essay

AN EXAMINATION OF THE EXTENT TO WHICH IMMIGRATION AND ETHNIC RELIGIOUS PLURALISM THREATENS THE WELFARE - Essay Example As briefly indicated in the above, ethnic and religious plurality constitute a potential threat to the very notion of the welfare state and its associate welfare citizenship. Plurality, implying conflict and difference, is antithetical to the very principles upon which the welfare state is predicated; the principles of shared identity, commonality and homogeneity. Even while conceding to the reality of the stated threat, however, this research will posit the claim that the management of plurality through multiculturalism has the potential to control and limit this threat. Understanding the extent to which ethnic plurality and religious diversity can function as a threat to the welfare state, is predicated on an appreciation of the implications of nation-hood and the social citizenry to which it gave rise. If the idea of the nation was invented, imported, and implemented by elites, it had also to appeal to the rest of the population who had not known dignity before the age of nationalism. Weber observes that "the idea of the nation for its advocates stands in very intimate relation to [their] prestige interests" (Weber 1978: 9251530). While the dominant political strata, such as feudal lords, modern officers, and bureaucrats are the primary exponents of a desire for the political power of the state, since "power for their political community means [political, economic, and social] power for themselves" (Weber 1978: 911/520), it is those who appropriate leadership in a community of culture, the "carriers of culture." who promote the idea of a nation (W eber 1978: 9261530). These are, for Weber, primarily intellectuals, but also artists, editors, authors, journalists, etc. (Weber 1946a: 1791485). While, originally, the "masses" had little to gain and little to lose within the political project of the state, or within the "cultural" mission of the nation (Weber 1978: 9211527, 9251530), they can increasingly identify with the nation-state's prestige due to the "democratization of state, society and culture" (Weber 1946: 1781485). The implication here is that the nation emerged as an imagined entity but attained concrete reality because of a shared social identity, a common culture which, in turn, gave rise to shared historical memories and heritage. In other words, the state is inherently founded upon shared social identity and it is the latter which gave rise to the nation, and not vice-versa. Within the context of the stated, the nation may very well be an imagined entity but it, nonetheless, bestows identity upon its populace (Gre enfield, 1992). Citizenship derives from the nation which, in turn, emerged as a direct outcome of

Leadership of Nursing Term Paper Example | Topics and Well Written Essays - 500 words

Leadership of Nursing - Term Paper Example eir experience, promoting evidence based practice within nursing and challenging the status quo for higher learning outcome become the hallmark of nurse leaders. Nurse leadership is considerably supported by organizations that empower the workforce and encourage collective decisions and shared learning. Thus, magnet status activities within nursing indicate higher leadership capabilities of nurses in specialized cases and complex clinical situations. Magnet hospitals provide better work environment to nurses through enquiry based learning and sharing accumulated knowledge for higher patients’ outcome (Kramer, 1999). Consequently, such hospitals attract good nurses and retain them to provide high quality of care. Magnet activities provide constant learning environment and help empower the nurses to make effective decisions based on informed choices. Thus, nurses’ initiative in critical situations evolves as key leadership trait that relies on best practices and evidence based knowledge to provide quality care. They also serve as mentors for RNs and guide them to identify their core competencies for higher healthcare delivery. Their competencies in clinical setting and their ability to share specialized knowledge with others are essential ingredients that endow them with leadership qualities. Nurse leaders exploit opportunities and progress from critical nurse specialist to teacher and advisor, later becoming part of hospital administration. It indicates their constant desire to test new approaches and establish new benchmark in the patients’ care through shared knowledge and evidence based practice. As a nurse in magnet hospitals, therefore, significantly enhances their personal and professional image which is acknowledged by the peer group and other health workers. They become better equipped to respond to crisis situation and become proactive participants in creating awareness on public health. Moreover, magnet activities encourage them to empower not

History of the world via its technologies up to 1492 Essay

History of the world via its technologies up to 1492 - Essay Example Amongst the most technologically advanced civilizations in the recorded history is the Ice Age Civilization. â€Å"The Jomon people †¦ survive as the Ainu of Hokkaido and northern Honshu, the northeasternmost Japanese islands. They were displaced by Yayoi invaders from Korea around 400 BC† (Smith, n.d.). Containers from the Jomon pottery happen to be the oldest known containers. They are thought to have existed 11600 years ago and thus, belong to the era before the culmination of Ice Age. Turkish were the oldest in Africa, Asia and Europe dating back to almost 10500 years. Making use of the water-tight Jomon containers, people found it easy to boil their food to get rid of germs and steam it. This made it possible for the Jomon Ice Age Civilization to enrich and diversify their diet with more nutritious and hygienic food including shellfish and steamed vegetables with large green leaves. They were aware of the positive effects of boiling the food on its hygiene and thus, people of the Jomon Ice Age Civilization boiled such foods like acorns to decrease their toxicity. Boiling the food also made it soft enough to be fed to toothless infants and old people. Hunting and gathering allowed the people of the Jomon Ice Age Civilization to dwell within and on the outskirts of their own villages without having to cultivate the crops. They did not have metallic tools for weaving or writing and the political fabric of their culture was very weak, yet it made little difference to them as they lived a very happy and fulfilling life without these things in their life. From the images and pieces of art belonging to the period of Ice Age, it can be inferred that the Ice Age Civilization might have been much more advanced in the sociological values as compared to all civilizations that have succeeded them until the present age. This can be estimated from the fact that the present civilization has just started to perceive the way quantum computers function, the reali ty levels linked with the Many-Worlds quantum theory. Owing to the unmatched spiritual and social advancement of the Ice Age Civilization, the construction of the Sphinx-Giza complex can be attributed to them specially because the homeland of African Abyssinian Highlanders is the only region which is thought to have sustained favorable climates between the 35000 years old Ice Age and the period 12000 years before today. Location of the Sphinx-Giza complex is the place where the African and Asian regions of the Ice Age Civilization meet each other. Modern age is characterized by the use of computers. Thus, computers, in different forms in the past serve as the common technological element between past and present. One of the very ancient astronomical computers in the astrolabe, that was used for solving intricate problems about the location of starts and Sun and determination of time. The most popular astrolabe produced in the history was the planispheric astrolabe which was used for projecting the celestial sphere upon the equator’s plane. Old astrolabes were made from brass. Little is known about the time when the stereographic projection transformed into what is called as astrolabe today. The treatise written by Theon of Alexandria in 390 is generally taken as a historic account of the subject in Middle Ages. Astrolabe was the computer of ancient times. The concept was