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.
Data, or facts, may be derived from several sources. Data can be classified as primary data and secondary data. Primary data is data gathered for the first time by the researcher; secondary data is data taken by the researcher from secondary sources, internal or external.e shall therefore discuss secondary data first and then take up primary data. Secondary data is of two kinds, internal and external. Secondary data â whether internal or external â is data already collected by others, for purposes other than the solution of the problem on hand.