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.
Excel-Add a prefix to all records in a column. Microsoft Office Excel is a spreadsheet program which includes prop up for XML plus description that allows everybody to scrutinise and distribute information.xcel has visual basic for applications. Microsoft Office Excel has the crucial quality of all the spreadsheets, using a lattice of cells displayed in orderly rows and columns to categorise the statistics manipulations like calculation operations.