Chemistry Essays

Chemistry essays are different from those who are more related to creative writing. They should be based on critical thinking, logic, and proper evaluation. Sometimes these essays are built on solving chemical equations and other problems. You need to have the solid theoretical background to prepare homework which deserves the highest grade. When students cannot cope with the tasks alone, they seek help at writing service. Our company is one of the best in this specialization. We do not only offer free samples on any topic but help with preparing the entire work within the quickest time.

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Cell Transport Mechanisms and Permeability Argumentative

1.Describe two variables that affect the rate of diffusion. Size of material and concentration 2.Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? The molecules were too large to pass through. This is what …

Chemical Periodicity

ABSTRACT The chemical periodicity was demonstrated by using different samples of Group IA, IIA and IVA elements that was placed on different test tubes. Their characteristics, namely color, appearance, solubility and physical state is keenly observed. Their solubility and pH were tested under 10 mL of distilled water and litmus …

Activity Series of Metals

Introduction: The chemical activity of a metal is directly related to its practical use. In this investigation you will investigate the chemical activity of metals with oxygen, water, acid and alkali, to rank metals in order of their activity. Aim: To observe the reactivity of metals in order to determine …

Biosensors Nano

Introduction: Over the past three decades we have witnessed a tremendous amount of activity in the area of biosensors. Biosensors are small devices employing biochemical molecular recognition properties as the basis for a selective analysis. The major processes involved in any biosensor system are analyte recognition, signal transduction, and readout. …

Lab-on-a-Chip

A Lab-on-a-Chip (LOC) device, also known as a micro-total-analytical system (microTAS) or microfluidics device, is a device that can integrate miniaturized laboratory functions (such as separation and analysis of components of a mixture) on a single microprocessor chip using extremely small fluid volumes on the order of nanoliters to picoliters. …

Physical Chemistry Formal Report

Biological lipids are a chemically diverse group of compounds, the common and defining feature of which is their insolubility in water. The biological functions of the lipids are as diverse as their chemistry. Fats and oils are the principal stored forms of energy in many organisms. Phospholipids and sterols are …

Ternary System

Exercise No. 2 TERNARY SYSTEMS Liezel Angelique L. Sabaupan, Bethel Faith Rezaga, and Bea Eder Date of Performance: July 1, 2013; Date Submitted: July 11, 2013; Lab Section: 1L; Instructor: Prof. Annabelle T. Abrera Abstract Ternary systems are represented in a Gibbs-Roozeboom diagram. Since a three-component system offers four degrees …

Vegetable Oil as Lubricant

Environmental concern and regulation has increase the need of renewable and biodegradable lubricants such as oil lubricant, grease or solid lubricants. Thickener and base oil determine the greases’ biodegradable properties and lubricating ability. Recent environmental awareness has put mineral oils; as the most widely used lubricant base fluid into consideration …

Discussion of Daphnia

The data supported the hypothesis that if Daphnia are placed in differently concentrated solutions of barium and calcium chloride, then the highest concentration of calcium chloride would affect them the most because of the production of hydrochloric acid and calcium oxide from the mixing of water and calcium chloride, two …

The Neutralization Reaction as a Double Displacement Reaction

Acid- base reactions, or neutralization reaction in inorganic sense are considered as double displacement reactions. Arrhenius acids and bases which contain H+ and OH- are responsible for the neutralization process for this specific acid-base type. The mechanism of the reaction is explained through double displacement reaction in an aqueous …