Chemistry Essays

Calibration Curve Equation:   y = 984 371. 3561x + 216 064. 755 R2 = 0. 9912 Calibration Curve Equation:   y = 688 260. 8175x + 475 029. 6892  R2 = 0. 9766 The  peak  areas  of  the  acids  were  then  obtained  through  chromatograms and plotted against the concentrations  of  the standard  solutions  of  the  organic  acids  to  construct  a  calibration  …

Research question: Does the concentration (mol DMS) of sulfur dioxide in wine rise or fall when exposed to alarm for different time periods (O, 75,150,225, 300 minutes)? Purpose: Many adults enjoy the consumption of wine but are not aware of the different preservatives and chemicals …

Niels Bohr is a big person in the history of chemistry. If it wasn’t for him we would not have known as much as we do now about the atom. He came to a conclusion of so many unanswered questions people were left after the …

Introduction Flavopiridol, a well-established inhibitor of cyclin-dependent kinases (CDK’s), is currently undergoing clinical trials. The inhibition of CDK’s, which are involved in the cell division cycle, is a vital goal in anticancer agents and therefore having potent drugs which can selectively inhibit these is crucial. …

Air pollution is the introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or damages the natural environment, into the atmosphere. The atmosphere is a complex, dynamic natural gaseous system that is essential to support …

A new solar powered adsorption refrigerator with high performance Meunier published a comparison of those three sorption systems for solar cooling (Meunier, 1994). The solid-gas system used in the present study is adsorption. The solar adsorption refrigerators have been developed mainly to be used in …

 Introduction A microlens array is composed of a series of micro lens distributed in a regular pattern and has been usedin a wide range of photonic products. A micro lens is a small lens, generally with a diameter less than a millimetre (mm) and often as small as 10 micrometers (µm). The …

The mechanical properties of materials are determined by performing carefully designed laboratory experiments that replicate as nearly as possible the service conditions. In real life, there are many factors involved in the nature in which loads are applied on a material. The following are some …

Two sodas containing citric acid were investigated in this experiment. Each soda was titrated using one of the two experimental methods. These methods are traditional titration and modern titration. Carbonic acid was already removed from the soda by boiling it. Both of the two different …

n the past, fields of wheat and rows of potatoes were seldom destined for anything more than a rumbling tummy. But bio-products have come a long way since people first branched out into weaving hemp into clothes and pulping papyrus into scrolls. Today the line …

Results and Discussion Isopentyl propanoate was prepared by refluxing isopentyl alcohol in excess propanoic acid and concentrated sulfuric acid. The ester was obtained by distillation in 62% yield, bp 140-150oC (lit. 156 of [1]). GC analysis of the distillate revealed only traces of the starting …

Introduction Lead is a type of metal that is extremely toxic. It is used in the industries for the manufacture of various products like paint, gasoline etc. The chemical is also a component of products like ammunitions and batteries. Lead is a problem because of …

Pesticidehe terms “chemical accident” or “chemical incident” refer to an event resulting in the release of a substance or substances hazardous to human health and/or the environment in the short or long term. Such events include fires, explosions, leakages or releases of toxic or hazardous …

The world has gone far from what it was a century ago. As the world grows old, things on it, around it, and under it have changed considerably; many were even replaced by new ones.  As time goes on, man has invented and innovated much …

DNA contains genetic material and information that makes up each individual trait. Every person can be identified by providing his or her genetic information based on a particular DNA strand. DNA information is an effective way of identifying persons if it is used properly. It …

You were to analyze a variety of tests including analyzing a glucose solution for the presence of simple reducing sugars, analyzing a sample of vegetable oil for the presence of lipids, analyzing a ample of gelatin for the presence of protein, and analyzing an unknown …

The environmental degradation is the deterioration of environment through depletion of resources, such as soil, water and air. When natural habitats destroyed or natural resources depleted, the environment are degraded. Here’s, one example of air pollution which lead to environment degraded in London. London in …

Cell Membranes and Transport Hands-On Labs, Inc. Version 42-0033-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that …

Hypothesis: The incident ray, the normal and the refracted ray all lie in the same plane. Also, according to Snell’s law, for 2 particular media, the ratio of the sine of the angle of incidence to the sine of the angle of refraction should be …

Study guide for Ch 16-18 Chapter 16 • Alfred Hershey and Martha chase answered the question whether protein or DNA was the genetic material by using Bacteriophages (viruses that infect bacteria). o Bacteriaphages were good for the experiment because they only contain 2 organic compounds, …

A new graduated table inhibitor for bar of Ca carbonate precipitation in man-made formation Waterss Abstraction In this probe, a new repressive chemical composing was developed. The made inhibitor is based on the aqueous solutions of oxiethilidendiphosphone acid, hydrochloric acid, ammonium chloride, polyethylene polyamine-N-methylphosphonic acid …

A membrane is a type of selective barrier that is used to separate or concentrate the feed stream as it passes through the membrane, which selectively allows some constituents to pass as others are retained on the surface of the membrane. The constituents that are …

Climate has a great influence over our lives. All our normal everyday actions are harmonizing to the clime we are populating in. However the clime has been altering from past few decennaries, which in bend is altering our life forms and therefore, has made this …

How to control: Several engineering measures and work practices are recommended to control ergonomic hazards during garment transfer, pressing and bagging activities. Include modifying equipment, making changes in work practices and purchasing new tools or other devices to assist in the production process. By making …

Lab report April 14, 2013 Abstract: In this article, we will experiment on the significant in strength of the enzyme by using three different test tubes and measuring the amount of product they give off. To determine this we are going to test the amount …

Abstract Air and water pollution has become a great problem in society today. Pollution is not only effecting humans but it is effecting plants, trees and animals and the earth’s natural water supply. This document will give various examples of air pollution and water pollution …

Purpose of the study To analyze different stuffs being used in Indian building industry. To analyse these stuffs for their utility in the Indian clime. To place different stuffs which are available in market and can be used in Indian buildings. Compare the advantages of …

IntroductionOils with highly high densenesss and viscousnesss are termed as heavy oils. They are composed of long and high molecular weight compounds. Heavy oils are categorized with scope that is less than 220API to 100API ( American Petroleum Institute ) gravitation. Heavy oils that are …

Abstraction Waste is universally generated by homo from their assorted activities. Besides sum of waste coevals is increasing really quickly. Open dumping of municipal solid waste is common pattern in srilanka. Bloemendal waste pace was taken as instance survey of this research. Bloemendhal shit waste …

A pure substance: • contains atoms of only one kind. • It has fixed physical and chemical properties like boiling point, melting point, valency, density  • contains only one chemical identity, e. g. one element or one compound. • cannot be separated into 2 or more substances …