Laboratory Techniques and Measurements Lab 1 (Labpaq) free essay sample

Throughout lab one we were introduced to many different forms of measurement, whether its using a ruler too measure length, a digital scale to measure weight, and also many different sized and shaped flasks to measure different volumes. Another key measurement of this lab was to teach the student about density and how to measure it. Density tells us that it is defined as the mass per unit measure, in which as we know is most oven referred to as volume and is also used to describe how heavy something is. We were also required to calculate many different measurements do to the number of moles that one substance might have due to the amount of material/solution we are currently working with. Along with all the measurements and how to use them correctly that Lab 1 teaches us, it also presents to use how to record our data correctly using Significant Figures. We will write a custom essay sample on Laboratory Techniques and Measurements Lab 1 (Labpaq) or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Significant figures are the number of digits that we may use including or excluding the zeros that we may be given with any number or solution. There are many different rules in determining the proper number of significant figure in an answer. For example; â€Å"All zeros to the right of the decimal place and to the right of a non zero digit are consider significant†. So we were given the number 45. 000, we know from the rule above that this figure has 5 significant figures because the zeros following he unit are behind the decimal place and are considered significant. My Hypothesis for this lab was simple, can I or can I not make the proper measurements using the provided materials and measuring devices included for this lab. Along with making the appropriate measurements, will I be able to use the rules I was taught and record my data with the correct significant figures? This lab is all about measurements and recording them properly. The lab first introduces to use the measurement of centimeters, millimeters, and meters to measure different household objects in our everyday life. We were given the task to use the provided ruler and measure a CD, key, spoon, and a fork in centimeters and then convert our findings to give us the appropriate units of millimeters and meters for each object required in the exercise. Data Table 1: Length measurements. | Object| Length (cm)| Length (mm)| Length (m)| CD or DVD| 12cm| 120mm| . .12m| Key| 5. 5cm| 55mm| 0. 055m| Spoon| 15cm | 150mm| . 15m| Fork| 18cm| 180mm| . 18m| Lab 1 also teaches us the importance of molecular weight of a substance and how to use that to find the amount of moles of that substance in a solution. For example; in exercise 3 we were asked to weigh 8 grams of sugar and then calculate how many moles of sugar it really was. Using the molecular weight of sugar (C = 12. 01 grams/mol, H = 1. 008 grams/mole, O = 15. 00 grams/mole). We were then able to use this molecular mass of the sugar that we then had to use to calculate and determine the molarity of the sugar solution that we were working on for exercise three. Data Table 8: Initial Concentration. | Chemical| Mass(g)| Molecular Weight (g)| Moles in Volumetric Flask| Total Volume (L)| Molarity(mol/L)| Sugar(C12H22O11)| 8. g8. | 28. 018g| 0. 29 | . 0025L| 116 mol/L| My analyses of this lab is like so. The lab presented itself with great learning options for teaching us how to use and proper measure the different units of the Si system, but as easy as they are to learn there are many of possible solutions for error. Since this was the first lab the many of the students have probably done in a couple years, I see plenty of room for h uman error do to the lack of training or experience with most of the lab equipment required to compete this lab to the full. Not only is there room for human error but there are also the possibilities of error with the lab equipment whether it is the student’s fault or just default equipment. For example, if the digital scale, required for most of the lab, is not tarred right, your numbers from your experiment are going to be way off. One wrong calculation or measurement could ruin a whole exercise if not whole entire lab itself. In my conclusion for this lab was pretty accurate to my hypothesis. I was able to make most of the appropriate measurements with little to no error at all. I had trouble with the density at first seeing I have never used the method for calculating density. After a few tries I was able to succeed in calculating all the appropriate calculation required for this lab as well as using the appropriate significant figures for all my answers in my lab right up. Measurements are all around us in our daily life. We use some sort of measurement on a daily bases whether we know it or not. Without measurement or the SI units we would have no since of idea of how much something may way or weather or not the water was going to fit into a single are or space (density). The unit of measure is used so much throughout the world everyday that without it, the world would have no since of weight, mass, height, width, or any other unit from the Si family. We use this form of description for almost everything living and non-living in our world today.

Real Gas Definition and Examples

Real Gas Definition and Examples A real gas is a gas that does not behave as an ideal gas due to interactions between gas molecules. A real gas is also known as a nonideal gas because the behavior of a real gas in only approximated by the ideal gas law. When Real Gases Differ From Ideal Gases Usually, its fine to use the ideal gas law to make calculations for gases. However, the approximation gives considerable error at very high pressure, near the critical point, or near the condensation point of a gas. Unlike ideal gases, a real gas is subject to: Van der Waals forcesCompressibility effectsNon-equilibrium thermodynamic effectsVariable specific heat capacityVariable composition, including molecular dissociation and other chemical reactions Real Gas Example While cool air at ordinary pressure behaves like an ideal gas, increasing its pressure or temperature increases the interactions between molecules, resulting in real gas behavior that cannot be predicted reliably using the ideal gas law. Sources Cengel, Yunus A. and Michael A. Boles (2010). Thermodynamics: An Engineering Approach (7th Ed.). McGraw-Hill. ISBN 007-352932-X.Xiang, H. W. (2005). The Corresponding-States Principle and its Practice: Thermodynamic, Transport and Surface Properties of Fluids. Elsevier. ISBN 978-0-08-045904-2.

R v Adomako, Law case Essay Example | Topics and Well Written Essays - 1500 words

R v Adomako, Law case - Essay Example The Court of Appeal discussed the tests on involuntary manslaughter when related with questions of gross negligence in dismissing the case and upholding a conviction. The court was faced with confirming that the violation of the duty of care resulted into the death of the victim. It was also important to find out whether the breach of the duty resulted to the death thus justifying a criminal conviction. The appeal was thus dismissed as it failed to convince the judges of the Court of Appeal to have satisfied the test of gross negligence in manslaughter cases (Erin and Ost 2007, p.19). The House of Lords was to ascertain what established criminal negligence, whether it was by gross negligence among drivers, as claimed in R v Bateman [1925] 19 Cr.App.R.8 and Andrews v Director of Public Prosecutions [1937] A.C.576; ignoring drivers carelessness as detailed in R v Lawrence (Stephen) [1982] A.C.510, or analyse the situation by its facts (Herring 2012, p.193). The House of Lords upheld th e conviction of the appellant for the offence of manslaughter stating that the law as made in the case of R v Seymor [1983] 2 A.C.493 was not relevant to the present case as the law it was found on been changed by the Road Traffic Act of 1991 that applied presently. The rider to this is that the trial judge is at liberty to use the word according to its liberal or literal meaning only when he thinks it as appropriate to the case beforehand. From this case, the House of Lords established the examination for serious negligence in manslaughter suitcases committed though not voluntary, Lord Mackay, LC in construing this in involuntary manslaughter cases stated that the usual test of negligence applied that which constituted the breach of duty that has resulted in harm or injury (Halpin 2004, p.93). Therefore, if a breach occurred that resulted in the death of the victim, the jury would be required to find out if the gross negligence resulted in the crime of manslaughter. In his argument , this depends must depend on the seriousness of the violation of the duty committed by a defendant in the course of his duties. In the present case, what the duty is supposed to care about is whether the conduct of the defendant was far from the standard of care expected of him and that it resulted in the death of a patient. Only if the departure was far from the expectation would the act or omission be adjudged as criminal. Using R v Bateman [1925] 19 Cr.App.R.8 as a basis for Lord Mackay while quoting Lord Hewart, CJ stated that as laid down in manslaughter cases if a person holds a position of consultancy, possesses special skills and knowledge and acts on behalf of a patient he should exercise due caution. Therefore a patient who willingly submits to the direction and treatment offered by a specialist is owed a duty of care that involves the exercise of skill and knowledge, care and diligence including caution in the provision of the medical care. In finding a conviction or not , the jury is therefore required to exercise utmost care through reasonable and a fair standard of care that takes consideration of the competence of the professional involved. Lord Atkin in formulating recklessness and gross negligence cases in involuntary manslaughter cases in Andrews v Director of Public Prosecutions [1937] A.C.576

To what extent to risk ,rewards and motives contribute towards an Essay

To what extent to risk ,rewards and motives contribute towards an entrepreneurs goals - Essay Example In the current era it can be seen it is mostly the motive of growth that is followed. However, such long-term visions or motives cannot be shared at lower level of the organization. Therefore, long-terms objectives are divided into small achievable tasks and goals in order to bring in a sense of achievement. Thus, in order to keep the employees motivated rewards are offered at the completion of the goals assigned, both at an individual and team level (Joanne, et al., 2013). Reward systems hold a strategic importance for an organization. Human resource being an important contributor in the operations and success of the organization often requires some risks to be taken in order to grow, especially entrepreneurs that try to excel with limited resources. Thus strategic management of all these factors risks, rewards and motives is very important for the success and growth of an organization. Contribution of risks in achievement of goals Every project, action or the decision that the mana gement would take definitely has associated intrinsic and extrinsic risks. With growing business competition and globalization of economies the risks are increasing, not only the larger organizations but also for SMEs and entrepreneurs. It is often said â€Å"high risk high return, low risk low return†. Thus, in order to increase profits and operations of a business, entrepreneurs take risks. The important thing is how these risks are managed. Risk management today has become a critical part of the strategic management of an organization. It allows the identification of the risks and events that can hamper the proceedings of the project, as per planning. It even doesn’t allow its successful completion (John, et al., 2005). Identification of risks allows, in advance, to take precautionary measures. Hence, it gives the control to management to exploit the situation. This further gives an advantage to the organization. It is the strength of the strategic management that c an make the risk to be the critical contributing sector in success of the organization; rather than a diminishing factor that would curtail the progress of the organization. Example of a multinational organization such as Walmart can be taken. Walmart used expansion as the growth strategy. They expanded into new markets facing new and extended risks. Pre-identification and analysis of such risks allowed them to exploit the events in their resources, as risk management had given them the opportunity to make better decisions and allowed them optimum use of their resources. Rewards and Motivation Reward and recognition system holds a critical importance in the human resource management of the organization. Employees or personnel are a major factor that decide the output, productivity and growth of the organization. They are the ones who would be converting the ideas and decisions of the management into actions. Management often splits their long-term objectives into short-terms goals a nd assigns tasks to each employee, individually or as a team. However these are the organizational goals that the employees are working for and they might be different than that of personal goals of an employee. It is the responsibility of the management to align the organizational goals with the employee. Hence, they should work for the benefits of both. It can be said that money is a motivational factor. As per Maslow’s need hierarchy theory, it satisfies the basic needs of an individual. However besides rewards, recognition is

What will the world be like in 100 years Personal prediction Essay

What will the world be like in 100 years Personal prediction - Essay Example As this approach toward further modernization proceeds, people could not help raise more demands to advance technology or the state-of-the-art means of generating material desires in enormous quantities. In which case, it becomes easier to visualize that in 100 years, human beings would have attained to the level of mutated intelligence or one that is typically associated to the myths of aliens or supernatural entities, having been accustomed to running things and lives with pure engines. If as early as the current generation, people have been exposed to seeing how a 3-D work, it is quite possible that even a decade from now they would be made to feel or touch a 3-D creation which makes possible the first step or initial stage of teleportation, very much like the scenarios in the films such as G.I. Joe and James Bond. This undoubtedly is much sought-after knowing how majority have gotten engrossed to the idea of convenience of being in various places all at once, to save incredible a mount of time and energy required of wearisome travel.

Essay --

Precious Powell Professor Kim Lewis Biology of Human Sexuality March 11, 2014 The Impact the Luteinizing Hormone have on the Reproductive System The Luteinizing hormone, also known as lutropin or LH is very important hormone of the reproductive systems in both sexes. The hormone is produced in the anterior pituitary gland that is secreted through a system called the hypothalamic-pituitary-gonadal axis; the actual release of the hormone is through the bloodstream. LH main purpose is to assist with the functioning of the testicles in men and the functioning of the ovaries in women. The two critical functions are to control the production of sex steroid, which are testosterone in men and oestradiol in women, and supporting the germ cell production. The hormone acts specialized cells that surround both sexes’ germ cells to provide an environment to support their maturation and development ("Society for Endocrinology "). It is one of the main phases of women' menstrual cycle. According to First Response, there are three phases menstrual cycle. The first phase begins on the first day ...

Summary of Barbara Ehrenreich’s “What I’ve Learned from Men”

In â€Å"What I’ve Learned from Men† (215), Barbara Ehrenreich describes the things that women should try to learn from men. Through her serious and sarcastic notes, she explains that women should get tough and be able to take credit as men do. The author stresses that gender battles and arguments affect women’s desire to become tough. Women are willing to refuse being ladylike (216) putting themselves in front of men. Ehrenreich argues that women are discriminated as they viewed mentally weaker than men.During the course of Ehrenreich’s writing, she argues that some women used to view men as unclassy and selfish human beings who require the ability to give respect to women and to acknowledge the fact that women are able to take care of themselves and of others without their assistance. Thus, the stereotype of ladylikeness is something that should be broken. Ehrenreich continues her writing offering practical recommendations for women who are willing to be come tough.She writes (217) that small acts of deference must be cut back, and programs to perform ladylike must be re-shaped. Further, women must be encouraged not to take responsibility of every human interaction they are engaged with. However, men will view such deference as deliberate act of hostility (217). Finally, the author recommends learning from men how to deal with anger. She argues that the key difference is that men get mad, whereas women get irritated.Women are recommended to express justified anger clearly and colorfully. Ehrenreich arrives at her definitive conclusion with, â€Å"I stand up and announce coolly, ‘I’ve had enough of this crap’, then I walk out – slowly, deliberately, confidently. Just like men† (218). Works Cited Ehrenreich, Barbara. â€Å"What I’ve Learned from Men†. The Longman Reader. 8th Edition. Eds. Judith Nadell, John Langan, and Eliza A. Comodromos. Longman, 2007, pp. 215-218. .