Calcium chloride

The unknown compound was composed of small, white crystals as shown in picture 1. The compound was completely odorless, which was tested by simply smelling the compound. Picture 1 (Unknown Compound): The solubility test of the unknown compound determined that the compound was soluble in water (H2O). The other known salts that were tested that were also soluble were all of the sulfates and NaCl. These were the only salts tested, because before this experiment it was determined by the flame test…

based on temperature or solute concentration. The determination of precipitates also come from solubility rules. According to Cooper, almost all sodium, potassium, and ammonium salts are soluble which mean that they will not form a precipitate.1 All chlorides, bromides, iodides, and fluorides, nitrates, chlorates, perchlorates, and acetates, and sulfates are also soluble. The only exceptions are as follows: Ag+, Hg2+, Pb2+, Mg2+, Ca2+, Sr2+, Ba2+, Pb2+. For week three, the goal was to determine…

Purpose What makes the best bubble solution? In order to make a best bubble solution, I have to use detergent, corn syrup, water, and glycerin. By the best, I mean a mixture that creates a solution which will last long. Acknowledgments I would like to thank everyone who helped me make my project successful. First of all, I would like to thank my teacher Mr. Mackey’s help. He provided the instructions and explained how to do an essay and a poster board. Secondly, I would like to thank you my…

In this experiment, qualitative analysis was used to identify two cations. Lead was identified in Part A, barium was identified in Part B and different flame colors were observed with various metal chloride solutions in Part C. Formula unit, total ionic, and net ionic equations were written for the confirmation reactions for both lead and barium. If this experiment was repeated, barium could be confirmed by the yellow precipitate BaCrO4 after confirming that the solution was clear and any…

Introduction The definition of water hardness, in its simplest form, can be explained as, “the amount of dissolved calcium and magnesium in water.” Water hardness can be attributed to groundwater systems naturally flowing through soil and rock. While doing so, divalent amounts of cations from mineral sources dissolve into the water supply (USGS). Water hardness is not harmful to people’s health. In fact, these minerals can be beneficial, as humans need minerals to survive. However, water…

Discussion: In this section the results of the degree of water hardness of the water samples of this group using the two primary methods EDTA and AA will be discussed and analyzed in terms of which sample is exhibiting a high degree of hardness and which sample is considered to have a small water hardness value compared to other samples, and test the hypothesis and prediction of the water samples being tested. According to the results obtained and calculated the water sample that has a high…

Solutions should be the cations of cupric nitrate, ammonium nitrate, zinc nitrate, calcium nitrate, aluminum nitrate, silver nitrate, ferric nitrate, and plumbous nitrate. The other seven solutions should be the anions of sodium hydroxide, sodium carbonate, potassium sulfate, sodium iodide, sodium phosphate, sodium chloride, and sodium chromate. Divide students into groups of two. Provide a bin of paper towels for the students to empty their well plates…

Phenols Degradation by Fenton Reaction in the Presence of Chlorides and Sulfates Siedlecka et al. (2005) also studied a series of phenol compounds present in wastewater. These compounds, as mentioned above, are widely used therefore are commonly found in wastewater derived from different industries such as petrochemical, food or resin manufactured. Since common biological treatment for these kinds of compounds is not feasible, is important to develop new technologies to treat these…

into the vinegar, the egg shell was dissolved, and the egg got larger. The reason the shell dissolved is because vinegar contains acetic acid, this breaks apart the calcium-based eggshell creating two byproducts. One byproduct is carbon dioxide from dissolving the calcium carbonate crystals in the shell. The second byproduct is the calcium…

line representing what has been called the cement line by Cook et al. [47]. Osteocytes, found in cavities (lacunae) within the matrix, were noticed. Dark precipitate in the form of a thick black line may indicate the presence of calcium phosphate in calcified bone. It was clear from figures 4I and J that dark color was observed in this sample, which indicates that the sample exposed to temperature at 285-525°C. The Haversian system was recognized but with…