is an expression calculator for calculation of molecular weight of compounds. Chemistry Assistant translates texts with or without chemical element symbols into mathematical expressions, and then calculates them. The calculator also provides a list of common physical constants and performs various conversions between English and metric units.
The element symbols can be written in lower case letters, and the program then tries to translate them and shows the result of the translation, or reports an error. The appearance of a mathematical expression, which is the result of the translation, can be seen if the mouse pointer is held over the tasks field. The right mouse button displays several often used anions and molecules.