Chemistry assignment Essay Example | Topics and Well Written Essays - 1750 words

Chemistry assignment - Essay Example Thus we must multiply 3 to get the integers 3 and 4, for Fe and O subscripts respectively. This is the simplest, or empirical, formula because the subscripts are the smallest integers that express ratios of atoms present in the compound. Certain elements appear to violate the rules in electron configuration. The electron configuration of chromium is rather than , as one might have expected. Similarly, the configuration of copper is instead of . This anomalous behavior is largely a consequence of the closeness of the 3d and 4s orbital energies. It frequently occurs when there are enough electrons to lead to precisely half-filled sets of degenerate orbitals (as in chromium) or to completely filled d subshell (as in copper). Increasing the distance from the nucleus decreases the attraction between the electrons and the nucleus. As this attraction decreases, it becomes easier to remove the electron and, thus, lower ionization energy. Element A has the largest atomic number (greatest distance between outer electron and nucleus) because it has the least ionization energy. The ionization energies for an element increase in magnitude as successive electrons are removed. But when the next electron removed is an inner-shell electron, there is a sharp increase in ionization energy. The figure shown below tells us which group elements A-E should be placed. 19. 27.823g of Na2CO3.xH2O crystals were dissolved in water and made up to 1000 cm3 of solution. 25 cm3 of this solution required 48.8 cm3 of 0.1 mol dm-3 HCI for complete neutralisation. Find the value of x in Na2CO3.xH2O using the following steps: 20. 4.00g of lawn sand (a mixture of sand and ammonium sulphate) was weighed into a conical flask, and 25 cm3 of 2.0 mol dm-3 sodium hydroxide solution was pipetted into the same flask. The conical flask was boiled for 20 minutes, after which time all the ammonia had been driven off,

EYEWITNESS TO HISTORY Assignment Example | Topics and Well Written Essays - 250 words

EYEWITNESS TO HISTORY - Assignment Example What impression do you think Diaz had of Aztec civilization? How does he make his feelings clear? Diaz and company were all astonished having found a great size of Aztec population who had been fond of merchandising goods of various kinds. At a point, he appeared to gain a remarkable impression of the market’s orderliness which maintained goods in appropriate arrangements. Despite his testimonial of the Aztec people’s culture of giving significance to excrements, Diaz attempted to clear his little amount of shame for New Spain by stating how he sensed similarities and connection with his own homeland district where market stalls and fairs with this scenario were a common sight as well. What can we learn regarding Aztec culture, economics, and science from this? Based on such findings, one may readily claim that Aztec culture was rich in its own way since the people of Aztec civilization managed to identify advantages among diverse resources. This way, the economy may be thought to acquire flexibility in which everyone had a job to do that matched specific individual potentials.

Composites Essay Example | Topics and Well Written Essays - 750 words

Composites - Essay Example l made by combining two or more distinct materials in order to fabricate a new product bearing desirable combination of properties that a single materials cannot achieve (Noort & Barbour, 2013). These materials range from polymer, metallic to ceramic elements (Naseem, 2010). Dental composites are wear resistant including composite resins, glass monomer cement, compomers and giomers For this case, I will design a composite that meant to replace amalgam as filler in dentistry. The composite must have a pH change as well as the ability to form a carboxylate salt. The material also has to contain fluoro-aluminosilicate glass, water as well as a polymeric acid (Brantley, & Eliades, 2011). In addition, the material ought to have improved physical conditions compared to conventional glass ionomoer. Such improvements aid reduction in water sensitivity, less fluoride release, rechargeable fluoride besides increase in thermal expansion (Naseem, 2010). Most importantly, the material has to be light cured to achieve good bonding to dentine, which depends on surface conditioning (Brantley & Eliades, 2011). The composite used should be anisotropic since forces from different directions act on them.The forces acting on the other direction enhance materials properties in one direction (Brantley, & Eliades, 2011). Properties of strengths and stiffness depend on the direction of force applied. Transverse direction will be necessary for the composite because elastic constants are similar (Brantley, &Eliades, 2011). Physical properties of the material needed for matrix include low solubility, high compressive strengths, as well as low flexural and sheer strengths. In addition, the material must have a thermal coefficient similar to dentin besides fluoride release and fluoride recharge. Glass monomer cement binds tooth and has diverse dimensions such as slight shrinking and expansion when setting (Naseem, 2010). It is also brittle and lacks translucency characterized by a rough

Health policy Essay Example | Topics and Well Written Essays - 250 words - 4

Health policy - Essay Example The funds will be used to develop an advanced genetic sequencing technology (Burton, 1). 70 million dollars, will be used by the national cancer institute, to develop a genome marker that will help in much more precise cancer treatment. Further 5million dollars will be allocated to the health record information management that will ensure that the data collected is stored safely and accessible to researchers. The physicians will also have access to the information to aid them in the management of patients. This initiative, will go long way in reducing the cost patient’s incur while undergoing treatment when empirical treatment is used. This too will prevent the patients from having to take a number of medication therapies that are not helpful to their conditions. I agree with the policy and the article since it will be of much help to the patients and the physicians as a whole. It will provide a guideline on the modality of treatment hence saving on time used to figure out the best method of treatment for a particular ailment Burton, Thomas M. "Obama to seek $215 million for precion-medicne." Wall Street Jounal (2015): 1. Document, Retrieved from

Danesh web design studio problematic situation Case Study

Danesh web design studio problematic situation - Case Study Example In this paper, we will describe a "Problematic" situation in a Web Design Studio, we will review some of the most appropriate management science methods for analyzing the situation and recommend the most suitable method(s) that helps to resolve the problem.We will build a model of the problem based on the selected method(s) and will discuss the limitation of the model we have developed. Also, we will discuss the process of exploring the model, arriving at recommended actions and implementing these actions within the culture of the organization.Before we start describing the problematic situation, we have better have an overview of "Danesh Web Design Studio"1 web services and introduce the structure of the organization in brief. We will then identify the problematic situation in the company.Danesh Web Design Studio offers a complete package of affordable website design and development. From the initial process of taking inputs from clients, planning on the basis of such inputs to fina l implementation and testing - all are done using latest web-site designing technique and skills.They allow their customers to provide all kind of inputs. They develop the website, giving top priority to the intended audience/market and overall user experience. They constantly keep the customers informed and take their feedback during the job process.Some of the services they provide for their customers are "Website Management and Maintenance", "E-Commerce Solutions","Search Engine Optimisation","Design and Implementation of Web-Based Applications" and "Website re-Design".... One of the project manager lefted the company to join a software production team in canada. The problem was the failure in project delivery to customers in the appointee time. Each project was delivered to the customers with seven to twenty days delay. This caused the studio to cancel some of the newly received projects in order to accomplish the old orders in shortest possible time and this caused the company to loose 7 orders worth of $47500 in June 2006. Nothing in the studio's total structure was changed exept for the project management because the company had lost %33 of it's management power. This seemed to be the cause of the failure in delivering the orders in time but other factors like the productivity of the personnel and their expertise in the field they were working could be questioned too. Not all the orders have been the same, for example, an employee might have been assigned to an order which has not been in the scope of his knowlege no matter if he/she has taken the order because of a good income or it has been the manager's decision. In next section, we will have an overview to some of the most appropriate management science methods that seems they may help us resolve the issue in the shortest possible time. We will then select the most appropriate method to resolve the issue with. 2. Reviewing some of the most appropriate management science methods for analysing the situation "Management science, or MS, is the discipline of using mathematics, and other analytical methods, to help make better business decisions. While often considered synonymous with Operations research (OR), MS is differentiated by being generally thought to have a more practical, rather than academic, bent. Some of the fields that are englobed within Management Science

How to Recruit and Retain Volunteers Essay Example | Topics and Well Written Essays - 500 words

How to Recruit and Retain Volunteers - Essay Example Others performed the duty due to court-mandated work as part of the sentence from a judge. Irrelevant of the motive non-profit organizations have to promote themselves adequately to attract volunteers and financial donations. I selected an online-articled entitled How to Recruit and Retain Volunteers for further analysis of the topic. The article stated that three ways to recruit employees is by using personal contacts, going where the people are, and by getting the word out (Genv, Youth Venture, 2007). I totally agree with the strategies chosen in the article. Word of mouth advertising is priceless and the costs of implementation are minimal or nonexistent depending on the situation. Non-profit organizations have to be proactive in their marketing and recruiting initiatives. It is wise idea to formulate seminars to be present at different locations such as churches, universities, and public parks. Personal contacts can be very valuable. The manager of the non-profit organization has to use his or her network of family, friends, associates, and colleagues to directly recruit these individuals to donate some of their time. The decision maker or manager of the non-profit organization must possess excellent communication and leadership skills. The organization must also recruit volunteers from the corporate sector. Many private organizations are willing to provide support in terms of capital or manpower when non-profit organization ask for the help and are able to negotiate a deal. The second important aspect of managing volunteers is being able to retain the personnel. A list of strategies and tactics that can be used to manage volunteers to keep them motivated and happy is listed below: People that are welcoming and nice create an environment that is pleasant for the volunteer which helps keep the volunteers interested. By making the work fun the volunteers enjoy their time which helps to keep them motivated. It is important

A Doll’s House Essay Example for Free

A Doll’s House Essay In his book A Doll’s House, Ibsen explores the ideological struggle of gender roles in a marriage where the wife Nora must maintain a helpless role and the husband Torvald must appear as the sole familial support. Henrik Ibsen has been able to drive this point home very powerfully in A Dolls House. Nora and Torvald, the main characters, belong to an ordinary middle-class family and the stereotypes in gender roles are very obvious and are most prevalent in this milieu. The coming of age of Nora and of women in the fin-de-siecle brought the issue of gender roles in society and the emancipation of women to the fore. The so called tragedy that befalls Torvald is of a private nature but its enactment has implications for the whole society. â€Å"In closing her door on her husband and children, Nora opened the way to the turn-of-the-century women’s† (Finney: 91). The play brings out the hypocrisy behind Torvald’s obsession with keeping up appearances and encouraging Nora to behave in a childish, helpless way to make him feel important and assert his masculine strength. Nora laments the fact that she had remained a doll-child and a doll-wife all her life. She had passively accepted this role to conform to the norms of society. She knew that she was expected to play the role of a pretty â€Å"featherbrained† woman who needed to be petted and taken care of constantly. She realized that neither her father nor her husband had given her enough credit to be a responsible and mature human being and be taken seriously. She knew that the oft repeated plea â€Å"But I cant get on a bit without you to help me† (Dolls House, II) was in effect a result of her utter dependence on her husband; a dependence which was encouraged by Torvald and the society at large. Torvald was protective and caring of Nora but what he actually was trying to achieve was have complete control over her thoughts and actions. He was the mainstay of the family and Nora was the limpet hanging on to his masculine strength and making herself agreeable to him in order to remain in his favor. At the end of the play, the misfortune is more about Torvalds failure to maintain the illusion of his being the most upright, principled and in short, the most perfect man. His realization that he had fallen in the eyes of a woman whom he felt condescendingly about heightens the sense of tragedy. He would often preach to Nora about her lack of principles which she had apparently inherited from her father and reprimanded her by calling her â€Å"a hypocrite, a liar—worse, worsea criminal! The unutterable ugliness of it all! For shame! For shame! †(A Dolls House: III). The unmasking of his own hypocrisy and the ugliness of being exposed to be a petty, judgmental and selfish man makes the audience understand that in spite of all his sermonizing, he was the one who lacked any principles as he was ready to drop everything and forget about the whole incident as soon as his own back was covered. In the final analysis of the ideological struggle depicted in this play, Nora, who was actually happy in enacting her gender stereotype during the beginning of the play and was elevated to a much higher position due to her realization of her identity and the consequent struggle to assert her independence. Nora’s recognition of her transformation from being â€Å"simply your little songbird† to a whole human being with potential to grow to be a woman of more substance is the first step towards her trying to resolve the conflict within her. She also understood that Torvald had always maintained a certain facade with her, which was contrary to his actual being. She says, â€Å"I realized that for eight years Id been living here with a strange man † (Doll House: III) and that steeled her determination to begin from scratch and live up to her potential. At the end of the play Nora appears to be strong and determined to the point of being heartless as she abandons her home, husband and children in quest of her true identity and knowledge of the ways of the world. The topic of feminism in this play deals with double standards and marriage (Finney: 92) A blatant example of this is Torvald’s condemnation of Nora as a â€Å"hypocrite and liar† when in reality it is Torvald who is the biggest hypocrite. His tall words about honor and honesty are shallow and he exposes himself as the small, petty person he is in spite of trying to assert himself in the stereotypical masculine role that society assigned to the male gender. Even the minor women characters in the play that of Mrs. Linde and Anne, the maid, demonstrate strength and fixity of purpose that the male characters Torvald, Dr. Rank and Krogstad fail to display. Ibsen was sensitive to feminine issues and though he himself proclaimed himself a ‘humanist’ rather than a ‘feminist’ his insight into the feminine psyche and his portrayal of women is evident in his memorable plays. He is able to make it clear to the audience that Nora’s helplessness and dependence on Torvald was put on. It became more obvious when we come to know that Nora had actually forged her father’s signature in order to take a loan to get Torvald to Italy in order to save his life. That she was capable of taking such drastic decisions and has the courage to work at copying and repay the loan to Krogstad without Torvald’s knowledge is a clear indicator that left to her own devises she was quite decisive and better at managing crisis than Torvald. In conclusion, it is indeed true that Nora Helmer tried her best to enact the gender role assigned to her by the society. However, when ideological differences arose she struggled to cast off the garb of the helpless little lady and emerged a stronger and more mature person. In the play a clear happy ending was not evident and the audience was left to interpret Torvalds hope for a â€Å"most wonderful thing† as a silver lining to an otherwise grim close to the play.