Copper/ Red Stuff/ Chemical Reaction The purpose of this experiment was to determine what the red stuff that was produced was. We put aluminum foil in a test tube filled with 100 milliliters of copper chloride. During the experiment, I observed that the aluminum foil was breaking away, the aluminum foil that was breaking away was turning into red stuff. After a while, the once light blue copper chloride was turning into a dull gray, almost clear.
The percent recovery of the copper was calculated using the equation, percent recovery = (the mass of the copper recovered after all the chemical reactions/the initial mass of the copper) x 100. The amount of copper that was recovered was 0.32 grams and the initial mass of the copper was 0.46 grams. Using the equation, (0.32 grams/0.46 grams) x 100 equaled 69.56%. The amount of copper recovered was slightly over two-thirds of the initial amount.
Copper Cycle Lab Report Ameerah Alajmi Abstract: A specific amount of Copper will undergo several chemical reactions and then recovered as a solid copper. A and percent recovery will be calculated and sources of loss or gain will be determined. The percent recovery for this experiment was 20.46%.
- A hydrate is a salt that contains water as a part of its crystal structure. The hydrate used in this lab was Copper (ll) Sulfate Pentahydrate. To heat the hydrate in this lab a crucible is needed. A crucible is a heat resistant container used to heat things to high temperatures. In this lab a mole was used to determine the measurements of all substances.
Acid-Base Extraction and The Extraction of Caffeine from Tea Bags and Purification by Sublimation. Summary: The isolation of organic compounds in a solution can be performed due to the difference in solubility in different liquids. The extraction of the benzoic acid ,3-nitroaniline and 9-flourene mixtures by adding different amounts of solvents and extracting the acidic, basic and the organic solvents the purity of the samples were then determined by comparing them to the literature value of the melting point. The percent recovery for the benzoic acid was 81.1%, the 3-nitroaniline was 52.9% and the organic extract was 158.8% this was cause by a large number of impurities that had occurred whilst conducting the experiment. The benzoic acid was found in the acidic extract while the 3-nitroaniline was found in the basic extract and the organic extracted contained the 9-flourene, this was determined by the comparison of the melting point range to the actual value.
First, the group was assigned an amount of copper sulfate. Then, one group member measured out the copper sulfate while another member retrieved a beaker; it was filled with water. Both items were taken to the lab counter where a beaker was already placed. The copper sulfate was poured into the beaker. Afterwards, the beaker was placed on the hot plate.
Twenty tablets were weighed accurately and powdered. An amount of the powder equivalent to 5 mg of amoxicillin trihydrate (content of one tablet) was dissolved in 60 ml of diluent. The solution was stirred for 10 min using a magnetic stirrer and filtered into a 100 ml volumetric flask through 0.45µ nylon membrane filter. The residue was washed 3 times with 10 ml of diluent and then the volume was completed to 100 ml with the same solvent. This solution was diluted with diluents to gae a concentration of 0.1 mg/ml solution each of Amoxicillin trihydrate.
AN INTRODUCTION TO THE VARIOUS CARBONATED SOFT DRINKS AVAILABLE IN THE MARKET Soft drinks, especially carbonated soft drinks are products of western culture. The first known instance of manufacture of carbonated soft drinks was in the year 1767 when the British scientist Joseph Priestley discovered a system of mixing carbon dioxide in water to prepare carbonated water. His invention was known as soda water and this invention was the founding stone for the proliferation of carbonated soft drinks in the world. A Swiss person, Johann H Schweppe founded the Schweppes company in the year 1783 in Geneva for selling carbonated water.
OSMOSIS The outcome in the increase of sucrose absorption in the mass of Chips November 27, 2017 Candidate number: ftp678 BIOLOGY IA SL Research Question: If the chips are put under water in a sucrose solution. , will their mass decrease in a certain concentration of sucrose solution? Hypothesis: The increase of volume of sucrose solution will affect the mass of the chips to decrease since the water will possibly transport itself out of the cells. The larger the absorption of sucrose solution, the lower the mass of the chips will become.
The Single Replacement Lab of Iron Replacing Copper in a Copper (||) Chloride Solution Lab The purpose of this lab was to help the students further their understanding of single-replacement chemical reactions, and to have a hands-on experience with it in order to practice equation writing and stoichiometry functions. In this experiment, an iron nail was placed in a solution of Copper (||) Chloride that was dissolved with water in a baby food jar. Observations were taken over the next three (schools) days.