Tooth decay refers to the damage of the teeth enamel. The enamel is the tough, external part of your teeth. This can be problematic to adults, teens and children. A sticky layer of film known as plaque continuously forms on the teeth. When you drink or eat foods containing sugars, these...
Why does the vapor pressure of water decrease when NaCl is added to it? Use atomic or molecular properties to explain why calcium oxide has a much higher melting point (2580 degrees Celsius) than potassium fluoride (858 degrees Celsius). ...
Alumina is a finely-ground mineral composed of oxide and sulfide minerals. It is a black, brittle mineral that occurs naturally in various locations worldwide. It is also utilized in the production of glass and porcelain. Furthermore, alumina is safe to use in cosmetics as it does not contai...
Indicate which type of bonding would be expected for the following materials and provide sound rationale for your answers: a) Solid Xenon (Xe) b) Calcium fluoride (CaF2) c) Rubber d) Tungsten (W) What is the entropy of pure...
Give an atomic-level reason why ionic crystals are brittle. Why is magnesium hydroxide a much more effective antacid than calcium or barium hydroxide? Why is magnesium hydroxide a much more effective antacid than calcium and barium hydroxide? ...
The structure of fluorite (CaF_2) may be considered as a simple cubic arrangement of fluoride ions with the charge balancing Ca^2+ ions being located in cubic holes. One half-cell in a voltaic cell is constructed from a silver wire electrode in a 0.25 M solution of ...
The melting point of the substance is described as the temperature at which the substance changes from its solid form to the liquid form. At the melting point, the solid and the liquid form of the substance exist in equilibrium. Answer and Explanation: The Magnesium oxide(MgO) and Calcium ...