In chemistry, a solution is made up of a solvent and a solute. The solvent is a substance, usually, a liquid, into which the solute, often a solid or a liquid, is dissolved. An example of a solution is when salt is dissolved in water. The salt is the solute, and the water is ...
Which ions cause hardness of water? Which is a substance that is made up of only one type of atom? What is the molecular mass of a water molecule? What chemical element is P? What is the compound for salt? What are substances called whose water solutions conduct electricity?
Hard water is water that contains high amounts ofCa2+and/orMg2+. Sometimes Mn2+and other multivalent cations are included in the measure of hardness. Note water may contain minerals and yet not be considered hard, by this definition. Hard water occurs naturally under the condition where water ...
Why is coal not classified as a mineral? Explain the difference between ores and concentrates in mineralogy. Why are most rocks made of silicate minerals? How are the minerals biotite mica and muscovite mica different? What is the purpose of the determination of the hardness of water? Explain....
We will know the recommended pH level for tap, pure, and filtered drinking water. Furthermore, we will discuss the importance of pH in water and determine its difference with alkalinity. What is pH? According to Wikipedia, in chemistry, pH is a scale value to tell whether an aqueous ...
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In this way, a hybrid film with covalent linkages between the inorganic and the organic networks is formed. The pencil hardness of these materials is higher than 1H, whereas that of an uncoated PC substrate is 6B. The hardness enhancement after coating may be due to the incorporation of the...
Thus, the total dissolved solids test qualitatively measures the number of dissolved ions but does not tell us the nature or ion relationships. In addition, the test does not provide us insight into the specific water quality issues, such as Elevated Hardness (mineral content in wat...
a7.9.2.2 When performing the verification of 100, as described in 7.9.2, the non-metallic material shall be of a hardness value greater than 100 of the type (scale) of the durometer being employed. Tempered glass of a thickness greater than 6.35 mm (0.25 in.) has been found satisfact...
What releases hydrogen ions in water? What is the charge on the hydronium ion? What is the charge on a hydronium ion? What is the hydronium ion? What ion does hydrogen form? Which ions cause hardness of water? What are ions and how do they form?