Acids

Sodium diethyldithiocarbamate, limiting equivalent conductance (Λ0), ion association, activation energy and thermodynamic functions. Introduction: The measurement of electrical conductivities of dilute solutions of salts or complexes is considered to be one of the important methods for studying the ion-pair or multiple- ion association not only in aqueous solutions but also in non-aqueous or mixed ones 1-4. Also, conductivity measurements were used to evaluate the hydration free energy of some…

For the first part, the qualitative polyphenol oxidase test (Table 1), we looked at 3 qualitative test tubes, where only test tube 2 turned orange since this tube had both the 40 mM dopa, the substrate and PPO enzyme extract. However, the test tube 3 did have a cloudy component because of the presence of PPO extract, but there was no color change. For a color change to occur, there needs to be a presence of both the dopa and PPO extract. Furthermore, we calculated the final concentrations of…

Pink Lips Naturally: Carrot and Beetroot Juice: The pink lips are carrot and beetroot juice. Carrot contains cancer prevention agent which helps in helping the skin. Peel the carrot skin and smash the carrot in the blender processor and take the carrot juice. Presently apply the carrot squeeze in the lips at whatever point you have time. Utilize this consistently for better outcomes. Beetroot likewise contains cell reinforcement so it additionally turns dark lips to blushing sparkly lips.…

Currently, Lagoa Vermelha has a depth of 1.0 m, with a small central core reaching a depth of 1.4 m, while Hohn et al. (1986) described a water column up to 1.70 m. In the present study, there was a greater tendency of accumulation of fine material, with little concentration of carbonates, at the highest depths. As expected, the accumulation of fine sediment was also associated with higher concentrations of organic matter. The results obtained in the bathymetric survey showed occurrence of a…

3.7. Equilibrium isotherms Langmuir isotherm proposed by Langmuir, (1918) with some limitations Dąbrowski, (2001) expressed as: (4) Where qm (mg g–1) is the maximum amount of the metal ion per unit weight of adsorbent, ‘qe’ is equilibrium adsorption capacity (mg g–1), ‘Ce’ is the equilibrium concentration of the adsorbate (mg L–1), and b is a constant which reveals the affinity of binding sites (L mg-1). From the plots between (Ce/qe ) and Ce the slope (1/qm ) and the intercept…

Eosin methyl blue (EMB) agar and MacConkey broth w/neutral red, HiMedia Laboratories Pvt. Ltd. India for coliform; Plate count agar, HiMedia Laboratories Pvt. Ltd. India for TPC; Potato dextrose agar, HiMedia Laboratories Pvt. Ltd. India for yeast & mold testing. Methyl Red Indicator, MERCK, India; Iodin, Qualigens, India; Methyl Orange, Qualigens, India; Ferroin Indicator Sol, MERCK, India; Glycerol, Qualigens, India; Methylene Blue , Qualigens, India; Oil emersion, MERK, India; Christal…

Figure 1 shows the relation between density ρ and molar volume Mv as a function of copper oxide. From this figure, can be observed that the ρ and Mv decreased with the increased of copper oxide content replacement the lead oxide. The decrease of density due to the molecular weight of CuO is lower than the molecular weight of Pb3O4. The decrease of the molar volume due to the decrease the number of oxygen and may be the ionic radius of copper ions less than the ionic radius of lead ions. The…

Introduction Density measures the volume that a given amount of mass takes up. Usually, density has grams per unit volume as a unit. To find the density of an object, the object has to be measured and its mass has to be divided by its volume. Often times, density is used to identify substances, since different elements have specific densities. This experiment is made up of two sections; the first section measures the density of water and the density of an unknown substance. If the procedure is…

The purpose of this experiment was to identify what the effect type of fruit had on the consistency of Jell-O. The Jell-O with apple slices in it had the hardest consistency, and the pennies dropped into the Jell-O/apple mixture dropped an average of .07 inches into the container. The pennies in the mango and Jell-O mixture dropped in an average of 1.1875 inches in, and the pennies dropped an average of 1.4875 inches into the pineapple and Jell-O mixture, meaning the apples and Jell-O solution’s…

Argyria, or more commonly known as blue skin disorder, is a condition in which the skin turns purple of purple-grey in color. This is due to the acquisition of silver or silver compounds in the body. Generally this rare skin disorder only has cosmetic effects and is not a lethal condition. However argyria is mainly incurable and irreversible. There are two forms of argyria, generalized argyria and localized argyria. Generalized argyria affects large areas of the visible surface of the body…