I and my friend James wanted to find out the absorption capacity of different color pigments mixed in water, when exposed to the infra-red radiation. Our hypothesis was the dark color pigment, on being subjected to infra-red radiation, would absorb more energy and will show up in the form of difference in temperature obtained before and after the exposure. Our experiment was influenced by some of the experiences in daily life. First observation was the preference of the light color clothes in hot day, as the light color reflects the sunlight and absorbs the little, preventing the body from ...
Essays on Initial Temperature
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I. Introduction Advances in recombinant DNA technology and bioinformatics-based data analysis have driven the explosion of structural biology in the last two decades (Kelly, Jess, and Price 119). This has resulted to the identification of at least 2000 proteins annually and a growing need in performing structural studies in these new proteins. The current trend involves the concern of analyzing protein structures close to its natural conditions (and other conditions) and of measuring their rates of structural changes, an essential factor in their biological functions. The technique of circular dichroism (CD) has gained an increasing popularity in addressing these ...
Introduction
Esterification reactions refer to those processes between carboxylic acids and alcohols reacting together to produce esters (Smith, 2011). Ethyl ethanoate also referred to as ethyl acetate is one of the esters and is prepared through a reversible reaction between an alcohol and an acid. The process results in the production of an ester and water. The catalyst used in the reaction is sulfuric acid, which also works to remove water that is produced and thus to increase the yield of ester produced. The preparation of esters through this method is a good introduction of how equilibrium manipulation may help in increasing ...
Heat and Thermodynamics
Work out the following problems. Be sure to show your work in detail. See the "Module 5 Handout" for examples of how the problems should be solved and presented.
1. How much energy (in J) is required to raise the temperature of 500 g of water from 20 to 100C, and then turn it to steam at 100C? Variables: m = 500g = 0.5 Kg Increase in water temperature, ∆T = 100-20= 800C Latent heat at 1000C, Lv =2260 KJ/Kg Specific heat capacity of water, c = 4.185 kJ/Kg/0C ∆Q = ? Relationships: ∆Q = m(c∆ ...