Essay on Chemistry

Claude McKay was born on September 15th 1890, in the West Indian island of Jamaica. He was the youngest of eleven children. At the age of ten, he wrote a rhyme of acrostic for an elementary-school gala. He then changed his style and mixed West Indian folk songs with church hymns. At the age of […]

By: Bill Your Chemical World In todays world we rely on many different facets to achieve what we normally dont even give a second thought. As I am sitting here typing this paper I am simultaneously using the culmination of numerous chemical breakthroughs. The American Chemical Society (ACS) is a group of over 150,000 chemists, […]

Precision A measure of how closely individual measurements agree with one another. Accuracy Refers to how closely individual measurements agree with the correct or true value. Significant Figures: Digits that are significant:   Non-zero digits are always significant. Any zeros between two non-zero digits are significant. A final zero or trailing zeros in the decimal […]

The poem “Boy at the Window” by Richard Wilbur is a remarkable poem. However, while reading it, one can notice certain elements that seem to overshadow others, creating a skewed interpretation of the poem. This article shall explore the imposing qualities of this poem and the effect that they have on the general understanding of […]

Atom – the smallest component of an element having the chemical properties of the element Example: the formation of a sodium chloride crystal Molecule – The smallest part of any substance which has the qualities of that substance, and which can exist alone in a free state. Example: a molecule of water consists of two […]

The country context – past achievements and current challenges ? Country development scenario and UNDP’s role in it India is a diverse, big and challenging country, with a wide range of economic, social, demographic and developmental scenarios prevailing across its landscape. However, being a social state, its government has always taken on an active role […]

• Hydrogen is one of the most abundant elements present on the surface of earth, making up almost 90% of all matter. It is present in organic matter, in fossil fuels (hydrocarbons) and in water. Thus hydrogen has the capacity to meet all energy needs of mankind; from combustion to electricity. It is also possible […]

When it comes to deciding where to build and scale your startup, most cities look like an underdog next to Silicon Valley. But then there's Atlanta. I moved to this city 13 years ago, expecting I’d be here for my four-year college career, then transplant to a larger market. Instead, I discovered that Atlanta was […]

Neurons: the Basic Elements of Behavior BY Debbte02 Elements 1 Neurons: The Basic Elements of Behavior Introduction to Psychology 101 Elements 2 The Basic Elements of Behavior The human body is a tremendous creation that is quite capable of performing a multitude of multifaceted movements and thoughts. In addition to its’ ability to move and […]

Adina, Astid, Chipewee, Jasmine: fear the experience Fear can seem as a crucial element to a storys success. As a story progresses to entertain the reader many times the unique themes influence the reader’s perception and interpretation of the story. One can witness this phenomenon in the short story “Adina, Astrid, Chipewee, Jasmine”, written by […]

Why life chose Carbon? It is the second most abundant element in the human body-18% of the wet weight. Molecules based on carbon-known as organic molecules because of their occurrence in living matter-constitute the majority of molecules found in living organisms from plants to people. 1 of the 4 special features of carbon is that […]

Viscosity of Liquids Part I: Low Viscosities Mona Kanj Harakeh 1 Objectives • To measure and analyze the viscosities of ideal (Toluene/p-Xylene) and nonideal (Methanol/Water) binary solutions and their components. • To determine the Activation Energy to viscous flow. • The effect of temperature change on the viscosity will be studied. Method: The viscosities of […]

Introduction The Fashion Channel was a succesful cable TV network who dedicated solely to fashion and broadcast for 24/7. Founded in 1996 from two entrepreuners, this Channel had constant revenue and profit growth above the industry average. Woman between 35 to 54 years were it’s most avid viewers, according to its annual demographic survey. Beyond […]

An index is a halochromic chemical compound that is added to a solution to find its pH. It is a chemical sensor for hydronium ions. The index changes colour to demo the pH of the solution. Some indicates are non really precise and merely state us whether the solution is acidic or basic. When the […]

An investigation to compare the reaction rates between potato and hydrogen peroxide against liver and hydrogen peroxide through loss in mass. Background information: Catalase is an enzyme that is found in all cells. This means that it is an intracellular enzyme. And enzyme is a biological catalyst. A catalyst is some thing that speeds up […]

The aim of this experiment is to find the sum of sulfate by hydrometric analysis. The sum of sulfate is determined quantitatively as Ba sulfate. BaSO4. by hydrometric analysis. For the experiment. a dilute solution of Ba chloride was easy added to a hot unknown sulphate solution somewhat acidified with concentrated HCl. The precipitate is […]

The two-phase separator is a device that uses a rotating centrifugal force to filter out gas from liquids present in oil wells. The working process of the separator contains two-phase separation movement and a forceful spinning flow in three dimensions [1]. The horizontal separators’ precision makes them vital tools in the oil and petroleum industry.  […]

Calcium transport study of SF-9 lepidopteran cells and bull frog sympathetic ganglion cells ABSTRACT The intracellular calcium level and the calcium efflux of the bull-frog sympathetic ganglion cells (BSG) and the SF-9 lepidopteran ovarian cells were investigated using a calcium-sensitive fluorescence probe fura-2. It was found that the intracellular calcium levels were 58.2 and 44.7 […]

Ozone (O3) is a molecule consisting of three oxygen atoms, similar to the oxygen we breathe (O2), however oxygen consists of only two oxygen atoms. In the stratosphere, a region high up in the upper atmosphere, light rays are responsible for the breaking down of oxygen (O2), breathable oxygen into its two separate oxygen atoms. […]

Production of Materials: Chemistry Assessment Task Part A: Biopolymers Definition: The term “Biopolymer” refers to polymers that are produced by living organisms. Since these are polymers, biopolymers contain monomeric units that are covalently bonded to form larger sructures. Biopolmers are divided up into 3 main classes. These are: Polynucleotides (which include RNA and DNA), Polypeptides […]

Pure aluminum is a comparatively soft. silvern white metal. When exposed to air. a thin coating of Aluminium oxide gives it a dull luster. It is three times less heavy than H2O. and has great strength when alloyed. it doesnt rust and has high electrical conduction. and Aluminium is besides malleable. doing it a really […]