Calcium chloride

The hypothesis was that unknown was calcium chloride. This conclusion came from a couple of sources of reasoning. First, a number of compounds were present in the lab, and one of those had to be the unknown. Second, the unknown was white and spherical in shape, and so these characteristics were examined for in the possible compounds. Compounds that were sand-like in texture or liquid in their present physical state were passed over since none of those compounds could be the unknown. Calcium chloride physically represented the unknown--not only in the color, but also in shape and size. Before performing tests on calcium chloride, all tests were done on the unknown (solubility, flame, ion, conductivity, and pH). With the ion test, it was decided…

the control experiments, the interaction between the Calcium Chloride and phenol red are responsible for the high temperature change in the overall reaction. After doing a control experiment with Sodium Bicarbonate and phenol red and noticing that the temperature got colder, only one other chemical mixed with phenol red could be responsible for the warm temperature change that chemical being Calcium Chloride. There was a temperature change that was observed during the individual control labs as…

Introduction: Hot packs work by dissolving a salt, such as calcium chloride, in water to create an exothermic reaction. When salts are dissolved in water it requires energy to break their bonds apart, but energy is also released when the ions are surrounded by the water molecules. If more energy is released than is required to break the bonds, the reaction will be exothermic and will produce heat. In hot packs the water is kept separate from the salt, and when it needs to be activated, they are…

not have the above properties. Results found in this test are consistent with known properties of Sodium Chloride, being that it is not Hygroscopic, Efflorescent or Deliquescent. Thus, based on this experiment solely, it is not ensured that the salt is Sodium Chloride as 3 other salts share this…

Determining the Percentage Yield of a Chemical Reaction Question: What is the percentage yield of the reaction of sodium carbonate and calcium chloride dihydrate (the dihydrate must be included with the molar mass calculation)? Predictions: Predict the mass of sodium carbonate and calcium chloride dihydrate that will be required to produce 1.90 grams of calcium carbonate: Therefore, the predicted mass of sodium carbonate is 2.0 grams and the predicted mass of…

Nevertheless, proper nutrition plays a major role in the prevention and treatment of osteoporosis. Two key nutrients for people with osteoporosis are calcium which is a foundational substance in building bones, and Vitamin D which allows for the absorption of calcium. When looking at Vitamin D ingestion, it has been said that from the day you are born, until the age of 70, it is recommended that you intake 600 to 800 international units (IU) of Vitamin D per day and by age 70 and on, you should…

mean that movement, especially via motor vehicles, would be affected. This affected the general convenience of commuters. According to CSX, there was spillage of another chemical by a different derailed car. The chemical spilled was calcium chloride solution, which is considered to be non-hazardous. Compared to the sodium hydroxide spillage, the calcium chloride solution did not threaten the environment in any way. The chemical, which is used in controlling dust on roads among other…

percent of the 8 elements form the mass of the earth’s crust, ocean and atmosphere. Two of the most abundant elements of the eight are calcium and magnesium. Calcium and magnesium are located on the periodic table located both in group 2 sharing the same family meaning that they share chemical property’s as well as the same valence electron because of their location and family relation to the period table. The alkaline metals are a reactive group of metals and combine with other elements so…

is the calcium phosphate in termed of hydroxyapatite that give bone their rigidity…

Purpose I’m writing to propose ATC purchase an alternative traction device instead of snow chains. The current method of complying with mandatory snow chain laws is to purchase metal snow chains for the drivers to carry through the states and provinces where it is mandatory to have them in the trucks during the winter months. Situation Snow chains are cumbersome, heavy, and are often stolen when left behind for the ETLLC group to retrieve. The approximate weight of a set of snow chains is…