The effect on the pH of Distilled water‚ Potato Solution and Commercial Buffer‚ when Hydrochloric acid (0.1 mol/L) and Sodium Hydroxide (0.1 mol/L) is added Mahima Mandava Mrs. Haist September 23rd‚ 2014 SBI4U1 Background Information: The pH is the measurement of how acidic or how basic a substance can be. The pH scale is used to measure how acidic or basic a living cell can be. The pH scale ranges from 0-14; 0-6 being acidic‚ 8-14 being basic and 7 being neutral. There are many factors
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[DllImport("kernel32.dll")] public static extern Int32 ReadProcessMemory(IntPtr hProcess‚ IntPtr lpBaseAddress‚ [In‚ Out] byte[] buffer‚ UInt32 size‚ out IntPtr lpNumberOfBytesRead); [DllImport("kernel32.dll")] public static extern Int32 WriteProcessMemory(IntPtr hProcess‚ IntPtr lpBaseAddress‚ [In‚ Out] byte[] buffer‚ UInt32 size‚ out IntPtr lpNumberOfBytesWritten); [DllImport("kernel32"‚ SetLastError = true)] public static extern IntPtr VirtualAllocEx(IntPtr
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1. What is the ‘economic problem’? The fundamental economic problem is related to the issue of scarcity. Scarcity means that resources are limited and short in supply in the world (e.g. diamond). Because of limited resources and unlimited demands‚ society needs to decide how much to produce and distribute these relatively scarce resources. The basic economic problem can be define as what to produce‚ how much to produce and for whom to produce. Some countries are lucky to have great natural resources
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Introductory Comments: A TOC expert certification in Supply Chain Logistics certifies that the individual has sufficient knowledge and tools (capability) to successfully implement both the Operations (Drum-Buffer-Rope and Buffer Management) and Distribution solutions of TOC. The Supply Chain Logistics expert exam is divided into two parts. The total examination time is 8 hours. Typically‚ the exam is divided into two four-hour parts. A passing grade for certification is 70% correct for both parts
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catalase removes this product. The activity of catalase can be measured by finding the rate of oxygen release from hydrogen peroxide. Potato provides a suitable source of catalase and the pH is varied in this experiment using citric acid-sodium phosphate buffer solutions at pH values of 4.4‚ 5.2‚ 6.5 and 7.5. Catalase is an enzyme‚ a biological (organic) catalyst. Hydrogen peroxide is the substrate for catalase. It lowers the activation energy required for a chemical reaction‚ and therefore increases the
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February 27‚ 2013‚ from Wikipedia: http://en.wikipedia.org/wiki/Amylase Introduction: Aim: is to find out what the pH level of Amylase is. Variables: Controlled variables: are amount of amylase‚ starch‚ iodine‚ buffer solution and time. Independent variables: are the different buffer solutions being used. Dependant variables: are the different pH levels being registered. Hypothesis: My hypothesis is that the Amylase will register at around a
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unknown solutions were determined with the use of colorimetry using McIlvaine’s buffer solutions varying in proportion of its constituents (disodium phosphate and citric acid). These buffer solutions were subjected to the addition of corresponding pH indicators and the variation of colors depending on its pH level was used as standards. At the end of the experiment‚ the colors of the unknowns were compared with the standard buffer solutions and then calculated to obtain an estimation of their pH or acidity
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the solution eluted with the pH 3 buffer reveals that Alanine was eluted first with the pH 3 buffer. The solution eluted with the pH 6 buffer had two Rf values of .43 and.62‚ revealing that the amino acid eluted with it was phenylalanine with another concentration of alanine. Finally‚ the fraction eluted with the pH 11 buffer had a Rf of .8‚ which tells us that lysine was eluted with the pH 11 buffer. The TLC separation of the elution with the pH 3 and pH 6 buffer were a little unclear‚ likely due
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strain needs 15 mL of the strain to be collected and to be pelleted into the centrifuge tube. The last pellet is labeled “G3-15 mL.” Finally‚ both the G3 and G3-15 mL are to be stored at -20°C. Preparing the rGFP crude extract: 500 ul of breaking buffer (made up of 10 mM Tris‚ pH 8.0 and 150 mM NaCl) is to be added twice to the G3-15 mL frozen bacterial pellet. After adding breaking
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negative log of an ion atom (pH= -log10 [H⁺]) (Fultz‚ 2013). When a substance has an acid or base added it to it‚ it causes it to become more acidic or more of a base. If the acids or bases don’t cause much change in the pH‚ it is known as a buffer. A buffer is a compound that minimizes the pH fluctuation in the fluids of a living organism (Brooker et. al‚ 2013). In this organized experiment‚ we will be measuring the effects an acid and base has an effect on nine unknown solutions. Drops of an acid
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