Free Chemistry Essays and Research Papers

Materials and Manufacturing 2 — Surface Roughness in Turning Lab Report

Task: report Tittle: Materials and manufactureing 2 – surface roughness in turning lab report Materials and manufactureing 2 – surface roughness in turning lab report Introduction Machining is a manufacturing process that determines the final dimension and geometry, as well as the surface tecture. The machine surface roughness depends on

Practical 4 Clinical testing: Quantitative determination of key metabolites and of metabolic enzyme activity in blood.

SLE222 Biochemistry T2, 2015 Assessment Practical 4 Assessment Form — Practical 4 Clinical Testing Student Name Student ID: Prac Group: Prac Date: Due Date: Partners: 1) Electronic Format of Prac Report The report must be produced entirely in an electronic fashion! Hand-written or hand-drawn components, be it as original or

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Kinetics of Au colloid Monolayer Self-Assembly

Experiment: 2NANO2 Kinetics of Au Colloid Monolayer Self-Assembly The objective of performing this lab experiment was to investigate the kinetic factors involved in constructing 2-dimensional arrays of metal nanoparticles on derivitised glass surfaces using UV-Visible spectroscopy. On establishing the time dependence of surface assembly, the equilibrium constant for adsorption of


Lab Report on Surfасе Roughness in Milling Introduction A surface can be defined as what one touches when holding a piece of object and is determined by the process used in making the object, e.g. a manufactured part. Surface roughness is a term used to refer to the small deviations,

Green Chemistry

What are the tools available for consideration in adopting the principles of Green Chemistry for developing a new reaction/product or process? Reaction mass efficiency – this is the percentage mass of the product desired in relation to that of non-benign materials used in the synthetic reaction (Tobiszewski et al., 2015).


Engineering The Effect of Cutting Nose Radius on Surface Roughness Introduction The current generation of consumer has developed the need for high quality metal cutting products with desirable tolerance and surface roughness. This has driven the metal cutting industry to come up with advanced techniques of producing high quality metal


Unit VII Assessment and Case Study Unit VII Assessment and Case Study Question One Petroleum hydrocarbons occur naturally in crude oil, and when they are released into the air via spills, fire or leaks, biological, chemical and physical changes occur. Aliphatic hydrocarbons in crude oil combined with oxidizing agents such

Practical 5 Analysis of metabolic components III: Extraction and analysis of the photosynthetic pigments from plant leaves

Biochemical Metabolism SLE222 T2 2015 Practical 5 Assessment Form — Practical 5 Photosynthesis Student Name Student ID: Prac Group: Prac Date: Due Date: Partners: 1) Electronic Format of Prac Report The report must be produced entirely in an electronic fashion! Hand-written or hand-drawn components, be it as original or as

Silver Nanoparticles

Experiment: Silver Nanoparticles FAISAL BINHUDAYB ID: 2130924 SEPTEMBER 30, 2015 Objective The objective of this lab experiment was to synthesize silver nanoparticles using a simple chemical reaction process which does not require heating or quenching, and analyzing the samples by UV-Vis spectra and light scattering to determine the size and

Synthesis and Recrystallisation of Adipic Acid

Experiment: Synthesis and Recrystallization of Adipic Acid Objective The objective of this lab was to carry out the oxidative cleavage of cyclohexene to yield adipic acid using sodium tungstate as a catalyst and hydrogen peroxide, and then characterize the crude and also re-crystallized product. Introduction The carbon-carbon double bond of

Extraction of Essential Oils from the Cloves

Experiment: Extraction of Essential Oils from the Cloves Objective The aim of this experiment was to extract essential oils from the cloves by steam distillation and identifying the volatile compounds present in the extracts. Introduction Essential oils are volatile, ethereal oily liquids that have been in use even before the

Soil Sampling & Analysis

Experiment: Soil Sampling and Analysis Objective The main aim of this experiment was to sample soils and carry out laboratory analysis to determine their salinity, pH and nutrient composition. Introduction . (Rayment and Lyons)Before submitting a soil sample for analysis, the samples should well represent the field under the test.


Experiment: Silver Nanoparticles Objective The objective of this lab experiment was to synthesize nanoscale particles of silver, and then investigate their size and optical properties Introduction The synthesis of nanoparticles of materials has currently gained interest because of their wide range of applications in fields such as medicine, electronics, catalysis,

Chemistry lab report (only reuslt and disscussion part )

Chemistry Lab Report Introduction Following the results of the experiment, it is seen that different sunscreens brands absorbs or reflects the ultraviolet (UV) rays in different degrees. The rate of UV absorption for a given brand depends on its sunscreen protection factor (SPF). For the organic sunscreens, the SPF majorly

Microwave Synthesis of Phenacetin- Lab Report

Experiment 3: Microwave Synthesis of Phenacetin Objective This experiment was carried out with the aim of learning about an aspect of green chemistry; using microwave heating to synthesize phenacetin instead of the conventional heating method. Introduction Microwave-accelerated synthesis reactions have produced amazing results that have made chemists to be interested


Biosensor One of the steps considered most important in construction of biological sensors is the immobilization of the bio-element. There are five common methods of immobilization: adsorption, micro-encapsulation, entrapment, cross-linking and covalent bonding. Adsorption There are two techniques of adsorption; physisorption and chemisorption. Direct physisorption is accelerated by van der

Lap experiment

Introduction In this experiment the learners have a chance of understanding of compartment fires. The aim of the experiment is to assess how compartment fires develop from time of ignition, flashover and then to decay. Compartment fire refers to a fire that is in an enclosed space. In the case

Critical Literature Review

Dye-sensitized Solar Cells (DSSC) Dye Sensitized solar cells are thin film solar cells belonging to the third generation photovoltaic solar cells that can convert any visible light into electricity. Unlike the solid state p-n junction photovoltaic cells used today, the DSSCs provide economically and technically credible alternative concept to solar


The Scientific Fraud Case of a U.S Vaccine Researcher, Dong-Pyou Han Dong-Pyou Han is a former biomedical scientist who was found to have fabricated and falsified data results in a research involving HIV vaccine trials at Iowa State University. He had manipulated several vaccine experiment data results in research that

Fire Chemistry

7Fire Chemistry Assignment FIRE CHEMISTRY ASSIGNMENT Explain why there are only trace levels of CO a few meters from the outside of a compartment when there is a 5MW fire burning (“bouncing”) inside? [100 words] Complete combustion requires sufficient supply of oxygen. In limited supply of oxygen, carbon monoxide gas