Friday, March 20, 2020

WEEK 6 COLLOQUY PAPER Essays - Philosophy, Ethics, Free Essays

WEEK 6 COLLOQUY PAPER Essays - Philosophy, Ethics, Free Essays WEEK 6 COLLOQUY PAPER Module 6 is about distributive justice. It focuses on how people should distribute resources among the citizens in a community. There are many questions that concerns the justice of distribution. John Rawls said that no one should be disadvantaged for because of the things they never chose. He feels as if all primary goods should be dispersed equa lly in society unless allocation works in a way that it is equal to the ones who are less fortunate . Everyone needs primary goods and because these goods are needed to go through life day by day. There are two types of primary goods: social and natural. Social primary goods are the things that every individual is believed to desire disregarding his or her plan on life. Natural primary goods are influenced by social organization s. But these goods are not directly apportioned by them. Examples of natural primary goods are: intelligence, talent and ability. Whether the distribution of economic resources are classified as inequality, it is justified on the condition of the ones who are least well off. Nozick believes that the g overnment should have limited access of the rights of citizens along with their liberty and property. He also feels that people are entitled to their accredited belongings despite the state of others. Without the act of fraud or force, we can restore holdings to what they would have been. This is how injustice is rectified.

Wednesday, March 4, 2020

Steric Number Definition in Chemistry

Steric Number Definition in Chemistry Steric number is the number of atoms bonded to a central atom of a molecule plus the number of lone pairs attached to the central atom. The steric number of a molecule is used in VSEPRÂ  (valence shell electron pair repulsion) theory to determine the molecular geometry of a molecule. How to Find the Steric Number Use the Lewis structure to determine the steric number. The steric number gives the electron-pair arrangement for the geometry that maximizes distance between valence electron pairs. When the distance between valence electrons is maximized, the energy of the molecule is at its lowest state and the molecule is in its most stable configuration. The steric number is calculated using the following formula: Steric Number (number of lone electron pairs on the central atom) (number of atoms bonded to the central atom) Heres a handy table that gives the bond angle that maximizes separation between electrons and gives the associated hybrid orbital. Its a good idea to learn the bond angle and orbitals, since these appear on many standardized exams. S# bond angle hybrid orbital 4 109.5 sp3 hybrid orbital (4 total orbitals) 3 120 sp2 hybrid orbitals (3 total orbitals) 2 180 sp hybrid orbitals (2 total orbitals) 1 no angle s orbital (hydrogen has an S# of 1) Steric Number and Hybrid Orbital Steric Number Calculation Examples Methane (CH4) - Methane consists of carbon bonded to 4 hydrogen atoms and 0 lone pairs. Steric numer is 4.Water (H2O) - Water has two hydrogen atoms bonded to oxygen and also 2 lone pairs, so its steric number is 4.Ammonia (NH3) - Ammonia also has a steric number of 4 because it has 3 hydrogen atoms bonded to nitrogen and 1 lone electron pair.Ethylene (C2H4) - Ethylene has 3 bonded atoms and no lone pairs. Note the carbon double bond. Steric number 3.Acetylene (C2H2) - The carbons are bonded by a triple bond. There are 2 bonded atoms and no lone pairs. Steric number 2.Carbon Dioxide (CO2) - Carbon dioxide is an example of a compound that contains 2 sets of double bonds. There are 2 oxygen atoms bonded to carbon, with no lone pairs, so the steric number is 2. Shape Versus Steric Number Another way to look at molecular geometry is to assign the shape of the molecule according to steric number: SN 2 is linear SN 3 is trigonal planar SN 4 is tetrahedral SN 5 is trigonal bipyramidal SN 6 is octahedral Steric Number Key Takeaways In chemistry, a molecules steric number is the number of atoms bonded to the central atom plus the number of lone electron pairs surrounding the central atom.The steric number is used in VSEPR theory to predict molecular geometry.