Lewis Acid-Base Concept. The Lewis theory classifies a substance as an acid if it acts as an electron-pair acceptor and as a base if it acts as an electron-pair donor. Other ways of classifying substances as acids or bases are the Arrhenius concept and the Bronsted-Lowry concept.ewis Acid-Base Concept. The Lewis theory classifies a substance as an acid if it acts as an electron-pair acceptor and as a base if it acts as an electron-pair donor. Other ways of classifying substances as acids or bases are the Arrhenius concept and the Bronsted-Lowry concept.
Microsoft Excel was created by Microsoft Corporation. It was first released in 1985.
The ASCII decimal (Dec) number is created from binary, which is the language of all computers. As shown in the table below, the lower case h character (Char) has a decimal value of 104, which is 01101000 in binary. The ASCII table is divided in 3 different sections. 1  Non printable, system codes between 0 and 31. 2  Lower ASCII, between 32 and 127. 3  This table originates from the older, American systems, which worked on 7-bit character tables.