Chemistry Lab Report Sample

Chemistry Lab Report Paper In this experiment, you Will investigate the variation in density among three Group AAA elements. You will use your results to predict the density of another Group AAA element. Pre Lab Questions: 1. How are elements arranged in a periodic table? Atomic number 2. What are the vertical columns in the periodic table called? Periods 3. What determines whether two elements will have similar chemical properties? If they are in the same group 4. What property will you measure in this experiment? Density 5. Describe how you will determine the volume of an irregularly shaped solid. In a quid 6. Describe how you will calculate density. Mass/volume 7. In what periods can you find BP, Sin, Is, and Ge? Period 3 Materials: Safety goggles Apron Water 100 ml graduated cylinder Centigrade balance Lead Silicon Procedure: I. Determine the mass Of the samples to the nearest 0. 01 gram. Record. 2. Fill a 100 ml graduated cylinder about three quarters full with water. Measure the volume, and record a s Goggle of water alone in the data table. Tilt the cylinder and carefully slide one of the samples down the side. Make sure the sample is completely submerged in the water. Measure the volume and record as Volume of water *sample in the data table. Other samples. 3. Repeat step 2, using the 4. Dry the samples and return them to the container designated by the teacher. S. Wash your hands thoroughly with soap and water, Tin (Sin) Lead (BP) Silicon (Is) Mass of sample (g) 116 10. 11 Volume of water alone (ml) Volume of water 4 sample (ml Volume of sample (ml) Density of sample (mass/volume) 3. 86 _S_ASS Appearance Rocky Roll Of tape Post-lab Questions: I. Based on your graph, estimate the density Of germanium, Ge. Compare your estimate with the accepted density of germanium which you will get from your coacher. We will write a custom essay sample on Chemistry Lab Report specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Chemistry Lab Report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Chemistry Lab Report specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Give possible sources of any errors. 2. Calculate the percent error between your estimated value and the accepted value for the density of germanium. Percent error (estimated (lab) value accepted value)/ accepted value X 100% a. Lead 11. 342 g,com -10. 86% b. Tin 7. 265 g,CERN -59. 66% c. Silicon d. Carbon 2. 336 g/com -92. 63% 2. 266 g/com 3. Based on the data table, hypothesize about how density will vary among the elements in other groups in the periodic table,- In other groups, the density should be similar to each other like they show here.

Free Essays on Police

Police Brutality By: Anonymous "But they didn't have to beat me this bad. I don't know what I did to be beat up." Rodney King, March 3, 1991. Police brutality has been a long lasting problem in the United States since at least 1903 when police Captain Williams of the New York Police Departmen coined the phrase, "There is more law at the end of a policeman's nightstick than in a decision of the Supreme Court." In the 1920's the Wichersham Commission had a number of instances of police brutality. Many of these included the use of the "third degree" (beating to obtain a confession). This is a very effective way to get a confession out of somebody. However, beating the accused could easily elicit a confession from a scared and innocent person. Also, this puts the accused person's life in danger. Police officers must make snap life and death decisions daily. Officers' work in an environment where death (theirs, their partners, and an innocent or guilty person) is one decision away. How does that constant fear effect an officer's perception? Unfortunately, many that are attracted to law enforcement are aggressive and prone towards violence as a solution. Police officers have a lot of power. With this power comes responsibility. Police brutality can be defined as the excessive or unreasonable use of force in dealing with citizens, suspects and offenders. A nationally known example occurred on the morning of March 3, 1991. Rodney King was pulled out of his vehicle and beaten by two Los Angeles police officers. The LAPD had originally given chase to Mr. King's vehicle due to a failure to yield. Officers fired a 50,000-volt Taser electric dart gun at Mr. King. They also hit King with batons. Mr. King, according to police officials, was hit approximately 56 times. Mr. King had 11 broken bones at the base of his skull. Also, the bones holding his eye in the right socket were broken (LA Times March 19, 1991 p. A20). ... Free Essays on Police Free Essays on Police â€Å"The 1980s witnessed improved professional status for the police officer in America. Educational requirements, communication skills, and technological support, enlarged the position and enhanced the image of the police officer considerably. It will always be recognized that the police force is on the cutting edge of violence and disorder, and must possess the skills to confront these matters effectively. The physician does this in the emergency room of a hospital; so must the police officer make wise decisions quickly and under much pressure.† (Opportunities, 6) Violence and disorder are important issues in our society. We have law enforcement people controlling these issues. These Enforcers of the Law risk their lives to protect us and ours. The Law Enforcers that we are most familiar with are PIGs (police). We see PIGs on our ways everywhere, and we try to avoid them, but they still come after us and we wonder why us, who gave them the authority to pull â€Å"us† over? â€Å"The 1980s witnessed improved professional status for the police officer in America. Educational requirements, communication skills, and technological support, enlarged the position and enhanced the image of the police officer considerably. It will always be recognized that the police force is on the cutting edge of violence and disorder, and must possess the skills to confront these matters effectively. The physician does this in the emergency room of a hospital; so must the police officer make wise decisions quickly and under much pressure.† (Opportunities, 6) Violence and disorder are important issues in our society. We have law enforcement people controlling these issues. These Enforcers of the Law risk their lives to protect us and ours. The Law Enforcers that we are most familiar with are PIGs (police). We see PIGs on our ways everywhere, and we try to avoid them, but they still come after us and we wonder why us, who gave them the authority to pull ï ¿ ½... Free Essays on Police Police Brutality By: Anonymous "But they didn't have to beat me this bad. I don't know what I did to be beat up." Rodney King, March 3, 1991. Police brutality has been a long lasting problem in the United States since at least 1903 when police Captain Williams of the New York Police Departmen coined the phrase, "There is more law at the end of a policeman's nightstick than in a decision of the Supreme Court." In the 1920's the Wichersham Commission had a number of instances of police brutality. Many of these included the use of the "third degree" (beating to obtain a confession). This is a very effective way to get a confession out of somebody. However, beating the accused could easily elicit a confession from a scared and innocent person. Also, this puts the accused person's life in danger. Police officers must make snap life and death decisions daily. Officers' work in an environment where death (theirs, their partners, and an innocent or guilty person) is one decision away. How does that constant fear effect an officer's perception? Unfortunately, many that are attracted to law enforcement are aggressive and prone towards violence as a solution. Police officers have a lot of power. With this power comes responsibility. Police brutality can be defined as the excessive or unreasonable use of force in dealing with citizens, suspects and offenders. A nationally known example occurred on the morning of March 3, 1991. Rodney King was pulled out of his vehicle and beaten by two Los Angeles police officers. The LAPD had originally given chase to Mr. King's vehicle due to a failure to yield. Officers fired a 50,000-volt Taser electric dart gun at Mr. King. They also hit King with batons. Mr. King, according to police officials, was hit approximately 56 times. Mr. King had 11 broken bones at the base of his skull. Also, the bones holding his eye in the right socket were broken (LA Times March 19, 1991 p. A20). ...

The Purposes Essential in the Present Management Function Research Paper

The Purposes Essential in the Present Management Function - Research Paper Example The leaders in a firm also possess the ability to motivate people in accomplishing the dream. They also keep the staff focused on elevating the firm to attain its objectives while inspiring them in conquering whatever obstructions they meet. Conversely, management intended for recruitment, resources, and predetermined short-term aims for personnel to make sure productivity as well as giving the direction of achieving the long-term objectives. Teamwork is a virtue all contemporary leaders struggle to achieve. Furthermore, making a team depicts showing an elevated degree of trust that a majority of enterprising people in the agency are disinclined to offer. Leadership gives the vision, whereas the team gives the trail and course on the manner to reach there. Scrutiny of administration or rather management looks to manage by the employment of fear in addition to, tasks being rigidly outlined. Additionally, management wheels the course as well as giving the trail, rules, and wherewithal to attain the firm’s goal. Many articulate that, the dissimilarity between being a director and that of a leader is that directing is perceived in matters of career whilst leadership is a vocation or talent. As a leader, an individual should possess plainly distinct assurances and most outstandingly, the audacity of one’s assurances to observe them come into realism. Effectual skills in leadership are nurtured and polished by time, incidents, and a factual need to be more than being a manager, but actualize in being a factual leader. A question is asked on the directors and leaders role in the present day environment.