Calcium hydroxide

Twenty kids one answer, who will figure it out. Everyone has been given the task to find the mystery mixture. At first they all had different clams. But now it is getting narrowed down. But there are some people that had different opinions. Everyone have been given water, a well tray, and a vial, along with other chemicals. I will explain how the class had gotten answer they did. And how they think it is right. The claim that will be explaining will be citric acid and baking soda. One of the…

We ran MgCl2 through various tests to see if its properties match our UWC. the first test was to compare the solubility of UWC and MgCl2. We added 1mL of distilled water to two different beakers each and gradually added 1g of MgCl2 and 1g of our UWC to each beaker. Approximately after 15 minutes, both solids dissolved in the water and MgCl2 passed this test. The second experiment was the halide test to determine if there are any Cl- ions in both solutions. We added 1 mL of 6M HNO3 and 1mL of…

Procedure: To begin this experiment all of the equipment was collected. The materials used in this experiment were a small plastic weighing dish, oxalic acid, a 250 mL Erlenmeyer flask, distilled water, a buret, NaOH solution, a 150 mL beaker, funnel, and phenolphthalein indicator. Before the experiment began the buret was cleaned with distilled water, a buret brush, and dish soap. The buret was completely washed out in order to not cause any faults in the results of the experiment. Once the…

baking soda had the highest peak and how it was the closest to reach 7 than any other substance. The hypothesis is supported because baking soda was the antacid that was closest to neutralization. A common ingredient in substances X, Y, and Z is calcium carbonate. Since it is one of the main ingredients, it must be a base that neutralizes acid. Another inference can be that it is a quick antacid meaning that it works quickly and efficiently…

The number of moles of hydrochloric acid neutralizes for the three trials (2,4,5) were calculated using stoichiometry. It was calculated for trial 2 by convert 4.88 mL NaOH to L by divide by 1000 mL. Then, to get to mol of NaOH the molarity of NaOH was multiplied by 0.00488. Then to get from NaOH to HCl, the mole ratio 2 HCl to 1 mol NaOH was multiplied by 0.00122. To get the amount of HCl per beaker, 100 mL of HCl was divided by 1000 mL to get 0.1 L. Then, the liters were converted to moles by…

For the following lab, the purpose is to utilize titration to determine the amount of ascorbic acid (vitamin C) present in a substance by reacting it with potassium bromate. An oxidation reaction takes place with ascorbic acid to produce dehydroascorbic acid, using an excess of bromine. The total amount of bromine utilized during the experiment is determined utilizing a back titration, in which the bromine is reacted with bromate. One mole of bromate produces three moles of bromine and the…

CONCLUSIONS: The purpose of this experiment was to find the concentration of the unknown base (NaOH) through a titration. In the experiment, it took 0.95 mL of NaOH with a concentration of 0.53 moles to neutralize 5.0 mL of a 0.100 M of HCl. In the expected result, the concentration of the NaOH was 0.50 moles. The percent error for the lab was only 6%, which means the lab had a fairly high accuracy. Differences between the expected results and the actual result would be caused by the sources of…

Buret was rinsed with water and NaOH, and followed by filling with NaOH solution made in the first week of lab. An acid of unknown concentration was prepared by the instructor and given for analysis. 25.00 mL of the acid was transferred into an Erlenmeyer flask using a volumetric pipette and 2-3 drops of phenolphthalein were added. The resulting solution was titrated with NaOH to achieve the faint pink endpoint and [unknown] was calculated according to the volume of NaOH used. The purpose of…

parafibromin protein which is a tumor suppressor as well. A mutation here causes a decrease of the parafibromin protein. The CASR gene is involved in the production of the calcium-sensing receptor protein (CaSR). CaSR helps to regulate the amount of calcium in the body, by controlling the production of the parathyroid hormone. The calcium molecules bind to the CaSR and this activates the receptor. The activated receptor sends signals to block the production and release of the parathyroid…

The major factor that allows calcium channel blockers to be effective are ethyl groups at the 3 and 5 position, and cyclic substituents on the 4 position. Furthermore, it was found that electronegativity has no effect on blocking ability; as a result, electron donating and withdrawing…