uniformity, content uniformity of fast dissolving oral film and 15 minute cumulative release of fast dissolving oral film. The selected independent variables in process optimization were temperature, stirring speed and stirring time.Then, single factor experiment was taken for determination of pressure and cycle of high pressure homogeneous. Suspension intermediate with a mean particle size of (1.45±0.11)μm and a particle size uniformity of (0.681±0.052)was
Aim of the Experiment: To investigate volumetrically the percentage composition of calcium carbonate in an egg shell, using back titration and to analyze the sources of error to evaluate the results of the experiment. Equations: Part A. C6H4COOH.COOK + NaOH C6H4COOK.COONa Part B. NaOH + HCl NaCl + H2O Part C. CaCO3 + 2HCl CaCl2 + CO2 + H2O Qualitative Observations: The egg shell was broken down into small piece in mortar and pestle, then it was added in hydrochloric
Five experiments were performed in 500 ml stirred conical flasks. Fifty millilitres (50 ml) of the bacterial culture (from a chemostat running at 30°C and 48 h residence time) was added to 200 ml of growth medium in each flask. The flasks were then loosely covered
Rusting is a destructive impact of a material due to its reaction to environment. It becomes the colossal problem because of the consequences that people are facing nowadays. In addition to our daily livelihood with this form of degradation, rusting causes the plant to shutdown, loss and contamination of products, costly maintenance, wastes of valuable resources and reduction of efficiency. Moreover, the formation of rust increases the volume of the initial iron mass that causes failure of machines
the formation of an electrolyte-xylene emulsion in the cathode layer. In the layer of this emulsion, the synthesis and simultaneous extraction of CdSe nanoparticles take place. Being extracted into xylene, they do not yield anymore to action of the acid medium in the electrolyte. Since xylene is a nonpolar solvent, and coagulate very little, if at all. For small nanoparticles, xylene is stabilizing additive, whereas larger nanoparticles precipitate within some time after extraction. This may be due
Rebound hammer test (Schmidt Hammer) is used to determine rapid compressive strength of concrete. Hammer consists of spring controlled mass slides on plunger. When the plunger of rebound hammer is pressed on surface of concrete, a spring controlled mass with a constant energy is made to hit concrete surface to rebound back. Rebound hammer is used to measures surface of hardness of concrete which is shown on given scale on rebound hammer. The scale shows rebound hammer and strength of concrete and
to each circle. • Same sprays of iodine on each side of the paper. Hypothesis: If we add hydrochloric acid to saliva, then the acid will affect the pH of the amylase in saliva because hydrochloric acid is a very corrosive acid that breaks down food in our stomach, and amylase is not present in our stomach. Materials: • Paper, big enough to draw in three circles. • Pencil • Saliva • Water • HCI (hydrochloric
Rate of Reaction Introduction: The Rate of Reaction defines the speed of the reaction that has taken place, determining whether it was fast or slow. For this experiment, I have decided to calculate the rate of reaction of the following equation: Hydrochloric Acid + Magnesium → Magnesium Chloride + Hydrogen 2HCl(aq) + Mg(s) → MgCl2(aq) + H2(g) In order to increase the rate of reaction, these following factors needs to be put in mind: The Temperature The Concentration The Mass of a substance The
pale-pink colour is produced. 1 ml of 0.5 M hydrochloric acid is equivalent to 0.02806 g of KOH. Saponification Value Test Procedure About 2 g of oil is transferred in to a round bottomed flask and dissolved in 5 mL of distilled ethyl alcohol. 25 mL of 0.5 M alcoholic KOH is added into it and mixed well. The flask is fitted with a reflux condenser and refluxed for about one hour (till the reaction is complete and the liquid becomes clear). A blank experiment is simultaneously conducted in the same
1. Title: Determination of Vitamin C concentration in water relative to temperature variations. 2. Introduction Vitamin C or in other terms ascorbic acid or ascorbate is a substance which is soluble in water. It is found in a varying concentrations in vegetables and fruits. Vitamin C is a vital nutrient for human constitution, however it cannot be produced by humans on the contrary to animals with few exceptions. So, humans need in certain amounts of Vitamin C in their daily diet. Vitamin C is