1. a. The pKa value of an amino acid is an indication of how strong or weak an amino acid is, based on the said acid’s dissociation constant. An amino acid that has a high pKa value is weaker than on that has a low pka value. Given that an acid’s dissociation constant is Ka, the pKa value is given by the formula: pKa = -log10Ka pH = pKa + log ([A-]/[HA]),It follows that for Cys12, 7.4= 7.2 + log([Cys-]/[HCys]) 7.4-7.2 = log([Cys-]/[HCys]) 0.2 = log([Cys-]/[HCys]) 100.2= Cys-/HCys Therefore, Cys-/HCys = 10-4Similarly, ...
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Abstract
In this experiment, benzene was treated with hydrogen in the presence of Pt/SiO2 as an example that can be applied on industrial operations to show that the most recently modernized methods of neutron total scattering that cover a wide Q-range allow the use of appropriate catalytic chemistry that can be measured on time domain to probe directly on site the hydrogenation of benzene within the catalyst pore. Based on this method, it is possible to study the rates of reaction on length scales that can provide measurements equivalent to the size of an atom or a nanometre. Furthermore, the ...
Abstract
Land and rockslides are natural disasters that threaten people living in the Sultanate of Oman. In this paper, the fundamentals of disaster management are identified from their causes. First, the aspect of slope stability is covered. The involvement of this information follows the need to appreciate the vulnerability of mountainous regions to mass movement. The causes of mass movement are also explained. Further, the risks of rock and landslides are expanded with the intention of directing the focus of the paper. To be objective, the paper progresses to a review of the measures employed by the government of Oman ...
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ORDER AN ESSAYReport on Arsenic-Free Water Filters
Introduction
Arsenic concentration in water varies depending on the source. This report is based on the discussion of the measures of reducing the levels of arsenic in the tube-well water. In this case, three criterions are selected for the study. Each of the methods chosen will enumerate its merits and demerits that suit the application.
Problem
Arsenic is semi-metal element found in the periodic table. It is an odorless, tasteless element that occurs naturally in water, rocks and soils, air, plants and animals. Arsenic poisoning from various water sources such as well present a significant problem across the globe. The ...
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