Essays on Anode

Introduction: All most all metals are unstable when exposed to air. This is because of the tendency of the metal to be converted into its oxidized form on reaction with air. When compared to zinc, iron has a greater tendency to form oxidized form and thus has greater susceptibility to corrosion. The ability of metals to react with air varies and this determines their relative stability. As zinc is much stable when compared to iron, it is used to galvanizing iron pipe, thus preventing contact of iron with air and water that contains dissolved air. Brass is an alloy ...

Solar energy harnessing through the use of solar panels installed in small homes presents better alternative to the hydroelectric provided through the national grid. While the use of solar panels may provide several advantages over the use of hydroelectricity, its usage presents several pitfalls to the user. It is imperative to investigate and outline the possible costs and advantages associated with the use of solar panels as a source of harnessing solar energy before installation is started. In most cases, the decisions concerning the installation of solar panels as the primary source of electricity are normally based on the ...

In manufacturing AA dry batteries cathode, the mixture (manganese dioxide, potassium hydroxide, and carbon black- graphite) is compacted into preforms. Indentation is done to prevent leakage. While the separator is manufactured by, soaking 3A papers and then an electrolyte is inserted to conduct power. The separator is designed from pieces of papers that are put like plywood across each other. It creates a barrier between the cathode and the anode material. The anode is composed of zinc powder mixed with potassium hydroxide that makes the gel thicker. The battery produces electricity due to the seals fixed. A plastic seal ...

Material Extraction of Dry Battery AA:

A typical alkaline dry AA cell comprises a cylindrical external case, cathode, anode, and electrolyte and separators. The external casing is made from nickel-plated steel and is lined with a separator to divide the anode and cathode. The separator is made of either a porous synthetic material or layered paper. On one end, the battery canister is sealed with an epoxy or asphalt sealant underlying a steel plate and at the other end with a brass rod driven through the cylinder. The rod is welded to a metallic end cap and passed via an outer plastic seal. Inside the ...

Introduction

Stainless steel is an important component in the modern industry having various uses in the industry. This has forced new developments in its manufacturing especially in terms of its composition. This can be the steel made from aluminum, manganese, and iron. All these materials makes the finished stainless steel product unique in terms of its composition, physical metallurgy, and other factors. This paper is going to discuss the development in stainless steel technology with regards to its composition in terms of the materials used. The materials that are going to be discusses are Al, Mn, and Fe. The paper ...

Microbial fuel cells are devices that employ bacterial or other microbial cells to generate electricity (Singh, Pratap, Baranwal, Kumar and Chaudhary, 2010). Cells generally carry out electron transfer and oxidation-reduction reactions during normal metabolic activities. Electrons generated during these reactions can be made to flow through an external circuit to generate current. Fig 1. Depicts a typical MFC. The anodic compartment consists of microbial culture in glucose or other medium (Singh et al, 2010). Wastewater can also be used as a substrate source for microbes in a MFC intended for effluent treatment application. The microbial cells breakdown complex substrates ...

Introduction

This proposal is about the physics of microwave oven. This includes the interaction of microwaves with metals and the generation of microwaves in magnetrons. The reason for choosing a microwave oven is because they are used common places like in homes and restaurants for warming food. A microwave is a wave that belongs the class of electromagnetic waves. They have frequencies ranging from 300 MHz to 300GHz and wavelengths ranging from 1 m to 1mm. (Bradshaw, Van & Swardt, 201)

Physics of the Microwave

A typical microwave oven consists of the magnetron, fan, power supply, waveguide, turntable and a base plate. The microwaves are ...

Question 1.Protein Purification

(a) The peptide Lys-Gly-Ala-Glu is stored in a buffer of pH 6.0. Using chemical reasoning predict the migration direction (anodal, cathode or stationary) of the peptide at pH 6.0 based on your understanding of the nature of the constituent amino acids in the tetra peptide.

Figure 1.

In electrophoresis, amino acids that are negatively charged migrate toward the positively charged anode and vice versa. This means that amino acids move towards the anode at a high pH value and move toward the cathode at a lower pH value. The amino acids would not move or migrate when the pH value of the solution within which ...

Joseph John Thompson is credited with the discovery of the electron. This was as a result of an experiment he conducted in 1897. Thomas discovered that Cathode rays, which were discovered by Philipp Lenard, could travel a lot further through air than is expected for a particle as small as an atom. Thomas first produced cathode rays and passed them to a bell jar. Here, they were deflected by a magnet. The path of the rays was detected by their fluorescence on a screen placed in the bell jar. He performed this experiment with different materials as the anode and with different gases in ...