When HCl reacts with water, the hydrogen ions react with the hydroxide ions to form water: Hâº + OHâ» â HâO. Thus, the reaction between HCl and Mg(OH)â is then: 2HCl(aq) + Mg(OH)â(s) â MgClâ(aq) + 2HâO(l) The products are magnesium chloride and water. Using ions, the reaction is: 2Hâº(aq) + 2Clâ»(aq) + Mg(OH)â(s) â 2HâO(l) + MgÂ²âº(aq) + 2Clâ»(aq) We can cancel Clâ» from each side of the equation.
Nature of Data. The term data is broadly defined as a recorded observation of sensory input; thus data are empirical, that is events perceived by the senses.The following terms refer to distinctions that are commonly made with regard to data: 1  qualitative vs. quantitative. 2  discrete vs. continuous.ature of Data. The term data is broadly defined as a recorded observation of sensory input; thus data are empirical, that is events perceived by the senses.
Metadata is data that describes other data. Meta is a prefix that in most information technology usages means an underlying definition or description. Metadata summarizes basic information about data, which can make finding and working with particular instances of data easier.