Reaction rate

Introduction Enzymes are catalysts that speed up chemical reactions without being used up in the process. Enzymes are able to do this by bringing two substrates together and having them bind to the enzyme itself. This allows the enzyme to lower the activation energy required to start the chemical reaction by forcing the substrates into an unstable transition state. In order to make sure the substrates fit, enzymes are able to mold their half-moon shape to fit around the substrates.…

The reaction of soda ash (Na2CO3) with calcium sulfate in water is represented by the following chemical reaction: Na2CO3 + CaSO4 >>> CaCO3 + Na2SO4. Assuming that this reaction is complete and that there is 153 mg/l of CaSO4 initially present, what is the mass of soda ash that must be added to 1 liter of the water? How many grams of CaO are required to be the chemical equivalent of 246 g of Mg(HCO3)2? A complete reaction requires the number of CaSO4 to be equal to the number of moles…

(Figure.3.1.4). This rapid sorption rate of Fe+3 on PUF is due to the strong bond formation with the PUF. The initial removal rate of Fe+3is very fast, where ~85% of the Fe+3 on PUF removal from the tested solutions at the first 10 minutes. Then the rate slowed down progressively with time and the equilibrium extraction is reached within a period of 20 min. In the beginning all the active sites entered the binding sites easily. With the progress of the reaction, the binding sites become…

Exercise's Effects on Cellular Respiration Cellular respiration is a chemical reaction that creates energy through your cells. It requires inhaled oxygen and expels carbon dioxide. This carbon dioxide can be detected through the use of bromothymol blue (BTB), which is a pH indicator solution. When the carbon dioxide is exhaled into the solution, BTB reacts as it would with any other acid, and turns from blue to yellow. The higher the level of carbon dioxide, the more quickly the color changes…

Firstly, the strategy used was a conservative approach, meaning that the stocks that were to be invested in are less risky and profitable. The second reason this week was interesting since the market had been active for three weeks now and a conservative stock purchase could also be because you are more comfortable buying a stock that you’ve had time to watch and research for the past three weeks. There are two ways to look at being conservative - first is clearly finding and researching a stock…

(1977) indicated that the EPR impact should be included as an effective variable when explicating the ER. The author tested more than 1400 firms on the NESE for 15 years. The results proved that the average rate of yearly returns on the high earning price portfolio was 9.34%; the average rate of yearly returns on the low earning price portfolio was…

increasing in number. With more resources being used up, this allows for further destruction of wildlife and wilderness areas to be destroyed which has an impact on the ecosystems surrounding the area. With longer life expectancy and continued birth rate increasing,…

Death. The end of life. The total and permanent cessation of all the vital functions of an organism (dictionary.com). Death is the absolute ending to a living thing. This concept at first is difficult to grasp. As a child, one doesn’t understand the finality of it. How does a more intellectually capable human explain to a young mind about this final event? Lies of a “long sleep” or “happy trip” are told to them to keep the idea simple. In reality though, the idea of death is a very complex…

Arguments can be expressed through verbal language, writing compositions, and visual designs. Director Jacob Kornbluth’s film Inequality for All is a visual argument, which allows for a stronger persuasive effect than by just using words alone. The film successfully advocates former Secretary of Labor Robert Reich’s economic idealisms and concerns. Due to the combination of video clips, pictures, and text, Reich is able to effectively communicate the argument that the gap in income inequality is…

Heart Rates in Organisms. Jesutofunmi Bankole El Centro College Abstract This experiment studies the effect of caffeine and alcohol on heart rate. This lab experiment detailed how water flea, (Daphnia magna) a transparent aquatic organism whose heart can be easily identified using a compound light microscope, was used to study the effects of caffeine and alcohol on heart rates. According to the research alcohol was observed to have caused a decrease in the heart rate of…