The beginning student of chemistry must have a knowledge of the theory which forms the basis for our understanding of chemistry and he must acquire this knowledge before he has the mathematical background required for a rigorous course of study in quantum mechanics. The present approach is designed to meet this need by stressing the physical or observable aspects of the theory through an extensive use of the electronic charge density.
The manner in which the negative charge of an atom or a molecule is arranged in three-dimensional space is determined by the electronic charge density distribution. Thus, it determines directly the sizes and shapes of molecules, their electrical moments and, indeed, all of their chemical and physical properties.
Since the charge density describes the distribution of negative charge in real space, it is a physically measurable quantity. Consequently, when used as a basis for the discussion of chemistry, the charge density allows for a direct physical picture and interpretation.
In particular, the forces exerted on a nucleus in a molecule by the other nuclei and by the electronic charge density may be rigorously calculated and interpreted in terms of classical electrostatics. Thus, given the molecular charge distribution, the stability of a chemical bond may be discussed in terms of the electrostatic requirement of achieving a zero force on the nuclei in the molecule. A chemical bond is the result of the accumulation of negative charge dens...
Deborah Tannen wrote “ Talk in the Intimate Relationship” to help people learn something about how men and women's interactions differ. She is a language scholar and has past experience of failed relationships and she feels as though this was because of lack of communication. Her main focus is on metamessages, these are messages that go beyond what we say. She states that the people that are literal minded, miss out on the context of what communication is. What this essay will consist of being what Tannen calls metamessages, summarizing her article on how men and woman talk, deciding whether Tannen is favorable to both genders and last but not least if I agree to an extent with Tannen says in her article.
Mckervey, M. A.; Tuladhar, S. M.; Twohig, M. F. J. Chem. Soc., Chem. Comm., 1984, 129.
Fig 1: Applications of single molecule spectroscopy in solving scientific problems in Physics, Chemistry and Biology
Atoms are electrically neutral; the electrons that bear the negative charge are equal in number to the protons in the nucleus
In the first chapter of Nathan Hatch’s book, The Democratization of American Christianity, he immediately states his central theme: democratization is central to understanding the development of American Christianity. In proving the significance of his thesis, he examines five distinct traditions of Christianity that developed in the nineteenth century: the Christian movement, Methodists, Baptists, Mormons and black churches. Despite these groups having diverse structural organization and theological demeanor, they all shared the commonality of the primacy of the individual conscience.
An atom, by definition, is the smallest part of any substance. The atom has three main components that make it up: protons, neutrons, and electrons. The protons and neutrons are within the nucleus in the center of the atom. The electrons revolve around the nucleus in many orbitals. These orbitals consist of many different shapes, including circular, spiral, and many others. Protons are positively charged and electrons are negatively charged. Protons and electrons both have charge of equal magnitude (i.e. 1.602x10-19 coulombs). Neutrons have a neutral charge, and they, along with protons, are the majority of mass in an atom. Electron mass, though, is negligible. When an atom has a neutral charge, it is stable.
Martha Nussbaum makes an important point when she suggests that literature is useful when it comes to understanding philosophy and philosophical concepts. In particular, Simone de Beauvoir’s All Men Are Mortal is useful in the way that Nussbaum describes because the treatment of existential concepts in the book allow the reader to gain insight into the life of a committed existentialist and into the desirability of this type of life. The book does so by being more accessible to readers and reaches a wider audience since it is not written using jargon like many dense philosophic writings. Also, the literary treatment of existentialism is insightful because the universal human desires and dilemmas that are explored inclines the reader to imagine
The purpose of this paper is to explain the origin and the types of jinns that exist in the Islamic faith. The disputes of the existence and physical state of jinns will be reviewed. Furthermore, this paper would not be complete without the fall of Satan. There will be an explanation of how jinns possess humans and a case study. Following, there will be a contrast of how witches cursed human beings. There are various differences that will be explained.
The Ultimate Nature of Matter. The theory of quantum mechanics has divided the atom into a number of fundamental sub-atomic particles. Although the physicist has shown that the atom is not a solid indivisible object, he has not been able to find a particle which does possess those qualities. Talk of particles, though, is misleading because the word suggests a material object.
One of the most noted proponents of early French existentialism, Albert Camus, composed nearly a dozen superb literary works dealing with this philosophy. His first novel, The Stranger, and a later book, The Fall, are recognized as two masterpieces of philosophical literature, not only in the context of Camus’ own work, but in the broad scope of philosophy as well.
Whether you are a student, a business man/woman, a buyer for a major company, or any person in general that interacts with cultures different than their own, you may find yourself in a situation where a cultural misunderstanding has occurred. These situations can cause embarrassment, trust issues, or even end a relationship. For these reasons, it is important to be prepared when interacting with someone from a different culture. Erin Meyer, the author of The Culture Map, and a professor at INSEAD, one of the leading international business schools, specializes in providing strategies for working with multicultural teams and overcoming misunderstandings (Meyer). In The Culture Map, Erin goes through
The author’s purpose in writing this book is many. One of these is to give students knowledge in the basics of chemistry. This book is an introduction to the life of chemistry itself. The theme of this book are elements, atoms, the periodic table, matter, chemical reactions, thermodynamics, DNA, electrochemistry, reaction rate, equilibrium, solutions, and much more! More broadly, the theme if this book is chemistry and its importance of it in our lives. There were many main points interesting to me, but here are a few.
Author Deborah Tannen became well known for composing her book, “You Just Don’t Understand: Women and Men in Conversation.” Like Gray, Tannen includes her perception on how men and women differ in communication. In addition, she includes her observations on how early does the differences occur. Tannen states that gender difference in communication styles appear at a young age. She then supports her claim by providing how young boys and girls achieve friends. They young boys created relationships with one another by doing things together. Young girls created relationships by simply talking to one another. According to Tanner, men only will approach conversations with the goal of “transmitting information” or “offering advice” (Tannen, 1990). She also includes that when women are discussing a problem within one another, the women form a bond together and seek to maintain an intimate relationship. However, when men hear women talking about problems, they offer a quick solution and then dismiss the problem. These results give the belief of why there are more woman social workers and counselors than males. Tannen’s book helped explain why women find men as insensitive. For example, if a couple is talking and the female directs a conversation to a conflict that she’s having, the male wouldn’t show as much compassion. He would only offer solutions to the problem and then try to direct
As a Muslim one must believe the existent of jinn other ways he or she is denying the creation of Allah. Also if a one rejects their present he or she also is refusing existent of the worst enemy of human beings which is Satan or in Arabic Shaydan(Surah I-an am
Ionic compounds, when in the solid state, can be described as ionic lattices whose shapes are dictated by the need to place oppositely charged ions close to each other and similarly charged ions as far apart as possible. Though there is some structural diversity in ionic compounds, covalent compounds present us with a world of structural possibilities. From simple linear molecules like H2 to complex chains of atoms like butane (CH3CH2CH2CH3), covalent molecules can take on many shapes. To help decide which shape a polyatomic molecule might prefer we will use Valence Shell Electron Pair Repulsion theory (VSEPR). VSEPR states that electrons like to stay as far away from one another as possible to provide the lowest energy (i.e. most stable) structure for any bonding arrangement. In this way, VSEPR is a powerful tool for predicting the geometries of covalent molecules.