Methanol

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    have contributed to the speed at which these tablets degraded. However, no new inactive ingredients were found in the HPLC results with the only retention time, outside of the activation of the mobile phase of 70% 25mM formate buffer, 30% pH= 3.0 methanol ( ̴1.85) was for acetaminophen at 2.683 minutes from the start of the HPLC. The mobile phase retention time was not included in any of the data points that make up Figure…

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    Vapor Pressure Lab

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    Lastly, the sensor kit ran for 120 seconds to get the most accurate reading on the graph and the final pressure and average temperature throughout was recorded. The first day this process was repeated three times each with 2-proponal, ethanol, and methanol. On the second day of the experiment, the process was done three times with room temperature water in the 1.00 L beaker with 2-propanol, three times with water and ice in the 1.00 L beaker with 2-proponal, and three times with hot water in the…

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    Fire Tornado Lab

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    Introduction A flam e tornado is pretty self-explanatory, it is just a flame being spun in circles{explain how fire tornados are created and what they are, maybe talk about them in the real world}The fire tornado works by “the rotating screen [giving] the air molecules an initial spin (called angular momentum or rotational momentum). The rotating air molecules collide with the hot air rising from the fire and the flame twists into the shape of a tornado” (“Steve”). Fire tornados actually happen…

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    investigated. These organic solvents include ethanol, methanol, PEG 400, propylene glycol. The result as mention in Table 16 & Figure 27 showed that the particles prepared by methanol were the smallest (317 nm) among other organic solvents. Ethanol, PEG 400, and propylene glycol produced the particles having the mean particle size of 525nm, 1274nm, 864nm, respectively, which were much higher in comparison of particles produced by methanol. Therefore, methanol was selected as a solvent for…

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    The goal of this lab was to prepare methyl m-nitrobenzoate using electrophilic aromatic substitution. An example of electrophilic aromatic substitution is nitration where a hydrogen atom which is part of a aromatic ring is substituted by an electrophile. For benzene, aromaticity is a stabilizing feature. As such, instead of undergoing electrophilic additions, it undergoes electrophilic substitutions. The nitronium ion is the electrophile which gets attached to the electron rich aromatic…

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    Potato Dextrose Agar Essay

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    added and observed for the presence of reddish-brown precipitate formation. Vinblastine and methanol was used as positive and negative control respectively 4.4.2 Hager’s Test (Kodangala et al., 2010) Briefly, to the 100μl of ethyl acetate fraction, 4-5 drops of Hager’s reagent (saturated solution of picric acid) was added and observed for the presence of yellow precipitate formation. Vinblastine and methanol was used as positive and negative control respectively. 4.5 Thin Layer chromatography…

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    comparison with the roots when collected in October26. Leaf and stem materials from ten individuals of Nothapodytes nimmoniana J. Graham. From each locality were collected. Then simple micro extraction method done with methanol. The Stem were found to be better options over leaf materials for CPT accumulation of Nothapodytes nimmoniana J. Graham. along the Western Ghats,…

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    mixture was mixed well and the extract solution was carefully transferred to the top of the column using a Pasteur pipette. The column was then drained to allow the solvent level to reach the top of the silica gel. Afterwards, a solution of 0.3% Methanol in chloroform was carefully added to the top of the column to elute the column. Upon adding the fresh eluent, curcumin and other compounds were eluted at a different rate. The eluted compounds were collected using test tubes. The collection of…

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    B Sridhar et al (2012) studied Purification and Characterization of Biosurfactants. The emulsifications of biosurfactants were checked in various oils such as olive, coconut, sunflower and rice bran oils, the emulsification activity of biosurfactants. Pseudomonas aeruginosa had higher emulsification activity than Saccharomyces cerevisiae. While checking the sugar and lipid content in biosurfactants by phenol sulphuric acid method and vanillin reagent method, found high in Pseudomonas aeruginosa…

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    compound, followed by n-heptane and n-decane. Molecular weight relates to the strength of the intermolecular forces, therefore it would be much easier for n-pentane to evaporate compared to the other compounds. The same goes for Step (1b), in which methanol had the highest vapor pressure, followed by ethanol, and…

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