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.
It was the only game developed by Majestic Studios, a studio founded in 1993 and consisting of Steve Bovis, Tim Croucher and Laurence Francis. The studio initially aimed to bring back the graphical text adventure genre on the Atari ST, and later the Amiga 500, culminating in a demo shown at the ECTS in 1995.