Calcium hydroxide

Abstract: Dens evaginatus is an uncommon developmental anomaly of human dentition characterized by the presence of tubercle on the occlusal surface of mandibular premolars and lingual surface of anterior teeth. Due to occlusal trauma this tubercle tends to fracture thus exposing the pathway to the pulp chamber of teeth. This case report is about the presentation of dens evaginatus in mandibular premolars bilaterally, among them tooth 44 was associated with chronic apical periodontitis. Fractured…

or man-made glasses eg: fly ash or silica fume) or poorly crystalline [metakaolin]. Pozzolanic material consists of reactive silica and alumina, they do not harden when mixed in water but react with dissolved calcium hydroxide (Ca(OH)2) ] to form develop a strong calcium silicate and calcium aluminate hydrates. The pozzolanic reaction: (Gartner, 2011)…

dissolve. Afterwards, the flask was weighed again, weighing 91.072 grams, indicating that the weight of the dissolved solute was .76 grams. The reaction was as follows: Ca + 2H2O-> Ca(OH)2 + H2 . The Calcium in the unknown reacted with water, rather than dissolving. Nitrate is always soluble in water, but calcium will form a precipitate of Ca(OH)2 since it reacts with water. The precipitate will have a solubility 0.79g/15mL, or…

INTRODUCTION: Indigestion is difficulty digesting food; it causes pain or discomfort in the stomach. Most commonly, people suffer from indigestion by overeating, drinking alcohol while eating, or eating greasy, fried or spicy foods. Acid in the stomach helps digest food and prevents infection. Mucus lines the stomach, bowel and oesophagus and acts as a barrier against the acid. If the layer of mucous gets damaged, the stomach acid can aggravate and cause inflammation to the stomach; this leads…

(FeSi) The dolomite is heated, in air, this produces both magnesium oxides and calcium oxides. The mixture of magnesium and calcium oxides is then heated with the ferrosilicon which forms calcium silicate and magnesium [7] The extraction of magnesium from seawater is a completely different operation which relies on the fact that magnesium hydroxide is less soluble than calcium hydroxide. So to extract the magnesium hydroxide they add CaO to seawater and because its more soluble it displaces the…

Ashley-Ann Burnett October 4, 2015 Lab #3: Acids, Bases & pH SLS43-14/7-8 Pre-Lab Questions: 1) An isotope is an atom with a different atomic weight due to changes in the number of neutrons in the nucleus. Some examples of isotopes are Protium, Deuterium, and Tritium, which are all Hydrogen atoms. Instead of the zero neutrons Hydrogen has in its Protium form, Deuterium and Tritium have two and three neutrons respectively. This change in neutron number and…

Introduction Unknown substances can be found everywhere. Whether it is the mysterious crust on the desk, or the sticky material found at the bottom of an unwashed bowl, there is a curiosity as to what that substance could be. In science, the unknown substance is called the analyte (1). The unknown substance, taken from the Gulf of Mexico, is tested to determine the true identity of the substance. In order to find the analyte, there are two different scientific methods that can be applied. The…

The goal of this experiment was to use chemistry to analyze an unknown compound and through testing its physical and chemical properties determine what unknown compound that was found in a landfill. This would benefit the Environmental Protection Agency because once they know what the substance was they could determine the best way to remove it from the landfill and if there were any potential safety hazards to beware of while handling the substance. This would prevent any accidents that may…

compound donates a hydroxide anion which collectively form a product containing salt and water. The dissociation of the acid and base allows for the formation of the salt and water. Similarly, antacids are formulated to neutralize the hydrochloric acid present in the human…

Similar to strong acids, strong bases are also good conductors of electricity due to their large concentration of ions. Examples of strong bases are calcium hydroxide and barium hydroxide. Weak bases produce a very low concentration of hydroxide ions, and thus, are poor conductors of electricity. Ammonia and ethylamine are examples of weak bases. As shown in the reaction below, the position of equilibrium gives the reactants an advantage. Strong…