Sunday, December 29, 2019

The Threat Of Global Economy - 1078 Words

Our global economy is consuming renewable resources rapidly than we can restore and demand has overreached the support of natural systems. Our twenty-first century civilization is encountering an outgrowing capacity, which is moving us onto an economic path that is not environmentally sustainable. Today, we face many environmental problems that put us at risk in achieving long-term sustainability, but we all have the decision to take action and move onto a path that sustains economic progress or watch our modern economy decline and collapse. We cannot say that we do not have the resources to move the world onto a path that can sustain progress because we do have the resources, but we need to respond to these threats at a rapid speed. We are also not the first civilization to face environmentally and economic decline. Past societies that have collapsed are relevant to the environmental problems we face today because they are our main threats, we thereby have the opportunity to learn from the past. The greatest threats we are presently facing to sustain humanity include, deforestation, global climate change, overfishing, population growth, consumption of cheap energy sources, and failing states, which can most likely be solved by introducing a new economic system that meets all the basic needs for everyone s satisfaction and that is powered by abundant sources of renewable energy. To begin with, the consumption of cheap energy sources is a great threat to sustainabilityShow MoreRelatedEconomic Threats : Slow Growth Global Economy1151 Words   |  5 PagesD. 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Saturday, December 21, 2019

Analysis Of The Movie The Alamo - 1727 Words

The Alamo is one of the most iconic historical events in America. Its known by everyone to be the Symbol of American courage and self sacrifice, but many people do not know the events surrounding the Alamo, such as how it was over 11 days long (Febuary 23 - March 6, 1836), or even what conflicts lead up to the inevitable battle between the Rebels and the Mexian loyalists. The story leading up to the Battle of the Alamo is much like many other stories about rebellion. It starts with a leader making bad decisions. That real battle starts before the start of the Texas Revolution, when the Mexican leader President General Antonio Lopez de Santa Anna, began to shift away from a federalist style of government, trying to start something akin to†¦show more content†¦As the war raged on, many battles were fought, some swift and glorious, and even more long and gruesome,The icon of these long and horrible battles was of course, The Alamo. The Alamo, originally called Mission San Ant onio de Valero , was originally a Spanish religious outpost that was converted into a fort by the recently expelled Mexican Army. Sadly, though it was a fort, it was a sorry excuse of one. It was designed to hold off attacks by native tribes, not an artillery-equipped army. This design made it incredibly hard to defend for troops from an age where artillery and guns ruled all, so a Texian engineer named Green Jameson constructed catwalks along the walls to allow defenders to fire over them. This method, though effective, also came at a cost. The position that the men had to take along the walls left the riflemens upper bodies completely exposed. The garrison stationed there was horribly undermanned and underprovisioned, with less than 100 men stationed at the fort by January of 1836. Luckily though, there were a number if cannons left behind by the Mexican forces, which Jameson installed along the walls. The defenders also had a large 18-pounder artillery cannon, which Jameson i nstalled in the southwest corner of the fort. These artillery cannons were a major advantage for the Texian forces, so much so that Jameson boasted to the Texian Army commander

Friday, December 13, 2019

Determining Molar Mass by Ideal Gas Law Free Essays

I. Abstract: By manipulating the ideal gas law (PV=nRT), we will be determining the molar mass of an unknown volatile liquid. Heating a flask filled with an unknown, easily evaporated liquid will allow for measurements that can be taken to work out the ideal gas equation. We will write a custom essay sample on Determining Molar Mass by Ideal Gas Law or any similar topic only for you Order Now This lab will require knowledge of basic equations used in chemistry. Using these equations, such as density and number of moles(n), we can substitute different values into the ideal gas law to manipulate it. II. Materials: 250-mL Erlenmeyer flask Needle or pin Unknown liquid sample Barometer 1000-mL beaker Hot plate Utility clamp Aluminum freezer foil Hot mitt Wire gauze with ceramic center 1000-mL graduated cylinder III. Procedure: 1. Aprons and goggles on. Clean a 1000-mL beaker for use as a heating bath. Set the beaker on a hot plate and begin heating. 2. Clean and completely dry the Erlenmeyer flask. 3. Cut a square of aluminum foil to serve as the cover of the flask. Trim the edges so that it neatly covers the edge of the flask. 4. Weigh the empty flask with cover and record to as many sigfigs as possible. 5. Obtain your unknown liquid and record the ID #. Add 3-4 mL of the liquid to the flask. Re-cover the flask, making sure the edges are tightly crimped. 6. Punch a tiny hole in the foil cover with a needle or pin. 7. Heat the water in the beaker to boiling. Adjust the heat so that the water will remain boiling but will not splash. 8. Immerse the flask containing the unknown liquid in the boiling water so that most of the flask is covered. Clamp the neck of the flask. 9. Watch the liquid carefully. The liquid will begin to evaporate, and its volume will decrease. 10. When it appears that the flask is completely filled with vapor, continue heating for 1-2 minutes. Remove the flask from the bath using the clamp. 11. Set the flask on the wire gauze on the lab table, remove the clamp, and allow the flask to cool to room temperature. Measure and record the exact temperature of the boiling water in the beaker, as well as the barometric pressure in the lab. 12. When the flask has cooled completely, carefully dry the outside of the flask to remove any water. Weigh the flask, foil cover, and vapor with as many sigfigs as possible. 3. Perform a second trial, if the final mass of the flask and vapor is not within 0. 05g of the first trial, perform a 3rd. 14. When two acceptable trials have been performed, remove the foil cover and clean the flask. 15. Fill the flask to the very rim with water and pour it into a 1000-mL graduated cylinder to determine the exact volume of the flask. Record. IV. Data and Observations | |TRIAL 1 |TRIAL 2 | |BAROMETRIC PRESSURE (mm Hg) |763. mm Hg |763. 5 mm Hg | |MASS OF FLASK AND FOIL COVER (g) |106. 095g |106. 095g | |TEMPERATURE OF WATER IN BEAKER ( °C) and |99. 1 °C / 372. 1 K |97. 9 °C / 370. 9 K | |(K) | | | |MASS OF FLASK/COVER AND CONDENSED LIQUID |106. 406g |106. 87g | |(g) | | | | | | | †¢ Volume of Erlenmeyer Flask (determined by filling completely with water): 289mL †¢ Unknown liquid ID #: B – (ethyl alcohol) V. Analysis of Data PV = nRT Trial 1) 763. 5 (. 289 L) = n (62. 4) (372. 1) 220. 6515 = 23219. 04 n 220. 6515/23219. 04 = n 0. 0095 mol = n Mass of vapor in the flask = (mass of flask/cover and condensed liquid) – (mass of empty flask/cover) Mass of vapor in the flask = 106. 406g – 106. 095g = 0. 311g 0. 311g/0. 0095 mol = 32. 73 g/mol = molar mass Trial 2) 763. 5 (. 289 L) = n (62. 4) (370. 1) 220. 6515 = 23094. 24 n 220. 6515/23094. 24 = n 0. 0096 mol = n Mass of vapor in the flask = (mass of flask/cover and condensed liquid) – (mass of empty flask/cover) Mass of vapor in the flask = 106. 487g – 106. 095g = 0. 392g 0. 392g/0. 0096 mol = 41. 02 g/mol = molar mass AVERAGE MOLAR MASS: (32. 3 + 41. 02) / 2 = 36. 875 g/mol Theoretical molar mass of ethyl alcohol: 46. 07 g/mol VI. Conclusion (36. 875 – 46. 07) / 46. 07 (x 100) = 19. 9% = percent error The first trial was very unsuccessful while the second trial was much closer to the theoretical value. The possibilities of error within the first trial include not letting the flask cool completely to room temperature before weighing and also forgetting to utilize acetone to dry the flask before the addition of the liquid. The latter was the major difference in performance of the two trials. This experiment showed that the interference of water vapor can completely wreck the chance for an accurate measurement of volume of a different gas. It is imperative to make sure that the flask is as dry as possible or the results will show a very wrong answer. It is hard to realize the prominence of water vapor in the air until an experiment like this one shows that it takes up a relatively huge space in a given volume of air. A suggestion to improve this lab could be to place more emphasis on drying the flask with a paper towel and acetone before use. How to cite Determining Molar Mass by Ideal Gas Law, Papers

Thursday, December 5, 2019

Social Media Profiles Critical Component †Myassignmenthelp.Com

Question: Discuss About The Social Media Profiles Critical Component? Answer: Introduction Different types of social media platforms like Facebook, Twitter, YouTube, Pinterest, Instagram and LinkedIn are evaluated to be very user-friendly in nature. They help in easy uploading, sharing, reacting and also in storing different contents for future uses(White, King, Tsang, 2011). Social Media Profiling Building and development of social media profiles ideally contributes in socialising and enhancing ones presence in the greater society. The key to development of effective social media profiles is to integrate the same with day-to-day communication platforms such that whenever the communication platform is used it simultaneously reflects on the presence of the individual in different social media networks. It is thereby required to display ones links to diverse social media platforms on websites, business cards and also along the signature files of Economics mails. The use of the above tactics would contribute in generating greater visibility of employers, clients, friends, colleagues and relatives to an individuals presence in social media(Shreves, 2015). Development of effective social media profiles can be employed as a potential tool for branding and also promoting ones presence along the social media platform. Thus, use of the right keywords are required to be incorporated for highlighting the social media profiles of individuals as creative, innovative and also in depicting of leadership skills. Individuals keen on employing social media for career development purposes can focus on generation of online resume through use of social media networks like SlideShare and even Pinterest. It thus requires maketing rational choices of photos and posts for attracting potential audiences(Kelly, 2015). Significance of Social Media in Job-Seeking Employers nowadays are focusing on employing different social media platforms to gain an effective understanding of the personality than the information gained by them by means of taking interview and also through the study of resume posted. Social media platforms also help the interviewees and new employees to effectively gain information about the company and also interact with individuals working or having worked in the organisation(Waldman, 2013). Further, social media platforms also help an individual get duly updated about new job postings and also newer employment opportunities matching ones expertise, skills and domain. A survey carried out by CareerBuilder.com highlights that around 37 percent of the employers focus on the using of social media for short listing candidates for different job profiles(Smith, 2013). Social Media Profiles and Job Seeking Job seekers are nowadays required to enhance their social media profiles based on the following illustration which would thereby help them in their job searches. (50MINUTES.COM. , 2017) Firstly, the job seeker is required to reflect in an honest and transparent fashion his or her expertise and qualification in LinkedIn. Secondly, continually updating experiences in social media profiles help in enhancing the attractiveness of it to employers. Thirdly, effective keywords highlighting ones skill and current work activity are required to be used for reflecting ones key potentials. Fourthly and fifthly, the job seekers are required to sign-up along different social networking platforms and enhance through use of photos, videos and posts for generating an effective social presence(50MINUTES.COM. , 2017). Conclusions The essay reflects that in the current era individuals focus on the development of effective social media profiles along diverse social media networks based on the use of potential keywords, photographs and posts. Development of effective social media profiles helps them in enhancing an effective social presence and in gaining hold of new employment opportunities. References 50MINUTES.COM. . (2017). Job Seeking on Social Media: Using LinkedIn, Twitter and Facebook to find your dream job. 2017: 50Minutes.com. Kelly, M. (2015). Social Media for Your Student and Graduate Job Search. United Kingdom : Palgrave Macmillan. Shreves, R. (2015). Social Media Optimization For Dummies. United Kingdom: John Wiley and Sons. Smith, J. (2013, April 16). How Social Media Can Help (Or Hurt) You In Your Job Search. Retrieved August 27, 2017, from https://www.forbes.com/sites/jacquelynsmith/2013/04/16/how-social-media-can-help-or-hurt-your-job-search/#4fa0fa927ae2 Waldman, J. (2013). Job Searching with Social Media For Dummies. United Kingdom : John Wiley Sons. White, B., King, I., Tsang, P. (2011). Social Media Tools and Platforms in Learning Environments. United Kingdom : Springer Science Business Media.