Solubility

AZO thin films are prepared by the sol-gel route. As a starting material, zinc acetate dehydrate (Zn(CH3COO)2, 2H2O) (sigma Aldrich) is dissolved in a mixture of pure ethanol and monoethanolamine (MEA, C2H7NO) to yield a precursor concentration of 0.75 M. Aluminum nitrate nonahydrate (Al(NO3)3, 9H2O) (sigma Aldrich) was added to provide a solution with an atom ratio Al/Zn of 3%. This resulting mixture was stirred for 1 h at 50°C. The MEA to zinc acetate molar ratio was set to 1.0. Prior to sample

Discussion 1. Describe the material floating at the top of the test-tube after the alcohol was added. The Material floating at the top of the test-tube after the alcohol was added was all the strands of DNA. The alcohol dissolved the cell walls of the cells and the DNA was free to move about freely. 2. Explain why each of the following chemicals was used in the extraction process: ◾detergent ◾meat tenderiser ◾alcohol. The detergent was used to isolate the cells we needed and chemically coated the

The Effect of Changing the Concentration of the Limiting Reagent Calcium Chloride Aqueous (g mL-1) Added to Sodium Carbonate Aqueous on the Percent Yield of the Precipitate Formed in Calcium Carbonate and Sodium Chloride, While the Room Temperature (23℃) and Drying Time (23h) is Kept Constant. Geetu Lalchandani Mr. Yhard SCH 3UB-01 November 16th 2014 Table of Contents 1.0 Research Question…………………………………………………………………….3 1.1 Introduction…………………………………………………………………………...3 1.2 Hypothesis………………………………………………

Purpose The purpose of this lab was to observe the characteristic colors of metallic ions using a flame test. II. Materials 7 metallic salts, 250 mL beaker, 400 mL beaker, bunsen burner, wooden splints soaked in water, safety goggles, laboratory apron, nonlatex gloves III. Procedure At our lab station, we poured water into our beakers until they were half full and lit the Bunsen burner. In one of these beakers, we placed our clean ones splints and in the other, we would place wooden splints we

In the lab, we purposed to identify ions and separate them, so that we perform individual test to analysis their groups. We performed two trial in this experiment. In the first trial, we used the identification of cations. To do that, we followed careful procedure and used proper regnant for this type of ions. The first method that we used was separation of cations. First, we labeled two empty test tubes 13 Anions and 14 cations. We took an amount of unknown compound and put it in the two

The purpose of this lab was to separate a 1:1 mixture of Acetanilide and benzoic acid through base extraction then purify these substances via recrystallization. In addition, we were able to analyze and deduce how efficient we were in purifying the substance through IR Spectroscopy, NMR spectroscopy, and by comparing melting points. This experiment proved to be partially successful. Through base extraction, we were successful in separating benzoic acid from Acetanilide. The strong base help in separating

Chemical Equilibrium Introduction     The goals of this experiment were to describe and understand what happens when a reaction reaches equilibrium. It was also done to understand what happens to the equilibrium when the variables are changed. There are different chemical species present in the following solutions. Fe(N. Fe(NO3) has Fe+2, NO3-, and H2O. In KSCN there is SCN-, K+ and H2O.Those mixed has the following chemical species, NO3-, SCN-, H2O, and Fe3+.  The equation ends up being FE3 + SCN

Brianda Mendez Lab 7 : Post Lab Each scenario below describes an operational error that can lead to low yield and/or low purity of product(s) or during the extractions of this experiment. In each case specify the component(s) whose percentage(s) would be too high or too low, and briefly explain your answer. After adding dichloromethane to Panacetin, the mixture was not stirred long enough. Not all of the Panacetin would be dissolved completely, instead you would end up affecting the

Title: Separation Lab Purpose: The purpose of this lab was to successfully separate a mixture of iron filings, poppy seeds, sand and salt. Hypothesis: In my opinion, I think it is possible to successfully separate the mixture. Procedure: 1. We got a Dixie cup with the mixture of iron fillings. 2. We got an iron magnet and stirred it around the mixture in the Dixie cup to attract all the iron filings. 3. Then, we put all of the iron filings that we

1. 100 + 273 K = 373 K 150 + 273 K = 423 K 960 L x 423 K / 373 K = 1,089 L 2. To find out if the solution is unsaturated add a different solution to the KNO3 and if the new solution dissolves then the KNO3 is unsaturated. To find out if the solution is saturated add a different solution to the KNO3 and if the new solution does not dissolve then the KNO3 is saturated. To find out if the solution is supersaturated add a seed crystal to the solution and if it crystallizes then it is supersaturated