Entropy

1. Which one of the following would make the most suitable catalyst in the decomposition of hydrogen peroxide (H2O2)? A. Carbon dioxide (CO2) B. Sodium chloride (NaCl) C. Magnesium oxide (MgO) D. Manganese dioxide (MnO2) 2. If the temperature of a reaction is decreased, what effect will this have on the rate of reaction? A. It will have no effect. B. The reaction will stop. C. The rate of reaction will increase. D. The rate of reaction will decrease. 3. Given the equilibrium reaction in a closed…

2.2. Instrumentation The residual concentration of metal ion in the filtrate were analyzed by GBC, Sensaa Series Atomic Absorption Spectrometry (computerized AAS) with air-acetylene flame under the optimum instrumental conditions as shown in (Table 1). The solution pH was measured using digital pH meter (Hanna instrument model HI 8519, Italy). Fourier transform infrared (FT-IR) spectra were measured on Nicolet is 10 FTIR spectrometer in the range of (4000 to 400 cm-1). Scanning electron…

Imagine, if you were not yourself, yet at the same time you were. Imagine that you had led a completely different life. Maybe you were a soldier, an engineer, a banker, or maybe you did nothing with your life. What if you were born a with a different name, different gender, a different race; what if you were not born at all. Imagine a world where the American Revolution never happened, The Allies fell to the Axis, or the Cold War ended in nuclear annihilation. However, none of these scenarios…

Led by John Bridger and Charlie Croker, a team is assembled for one last heist to steal $35 million in gold bars from a heavily guarded safe in Venice, Italy. The team includes Charlie Croker, a thief and John's protege, Napster, a computer expert, Rob, their wheelman, Steve, their inside man, and Left Ear, their explosives expert. After successfully pulling off the heist, a team member, Steve, intercepts their van and take the gold, shoots and kills John, while the rest of the team falls into…

1. Result and discussion 1.1. Characterization of PUF and removal of Fe+3 on PUF 1.1.1. Characterization of PUF 1.1.1.1. Hydrolysis of white PUF using HCl The mass lost after 24 h in HCl concentration by the PUF was 0.45%. was i.e., with increasing acid concentration and some groups of the PUF the percentage loss of mass increased were hydrolysed. The cube shape of PUF was affected by acid washing i.e.the size of the cubes became smaller and they packed more closely together (Moawed, 2008). 1.1…

Being a social worker is often a challenging, yet rewarding career. Social workers are responsible for helping individuals, families, and groups of people to cope with problems they’re facing to improve their patients’ lives. Social workers are also trained caseworkers in social service agencies who perform several functions which they use different components of the practice framework, the theoretical underpinnings to in order to build helping relationships. After interviewing a caseworker in a…

1.5. Enzyme-Polysaccharide Interactions Proteins and enzymes have become an integral part of many industrial processes as well as being applied both in cosmetics and in therapeutics. Due to advances in biotechnology and genetic engineering, mass production of protein and enzymes has become feasible. Use of enzymes is environmentally friendly as they catalyse reactions under mild conditions against polluting inorganic catalysts which works in the extremes of pH and temperature. However, this can…

polar residues protrude out, consequently minimising the number of hydrogen bonds between non polar sidechains and water on the surface of the protein. This releases water molecules from the cages they form around the side chains resulting in the entropy of the system increasing. Thus, G is negative and protein folding is a spontaneous…

The organization had an excellent culture that embraced diversity, informed participative decisions, high quality programs, team collaboration, veracity, and accountability when I started in 2005 as a Head Start teacher. The former executive director who was also the founder of the organization served for 34 years and demised due to sudden illness in 2010. The past executive director’s tenure resonated with the leadership portrayed in Heineman’s High Performance with High Integrity and…

The kinetics of the reaction between peroxomonosulphate with Lactic acid was studied in the presence of Mn(II) at alkaline pH. The reaction followed first order with respect to peroxomonosulphate. The rate of the reaction was studied under pseudo first order condition and found to increases with the [Mn(II)] and lactic acid. Thermodynamic parameters were calculated and reported. Based on the results a rate equation, kinetic scheme and a most probable mechanism has been predicted. Keywords: Alpha…