Our PTE App is the ultimate tool for every friend of chemistry - whether pupil or teacher, student or professor, amateur or expert, hobbyist or technician. Please note that the chemical formula is not limited to the known chemical compounds. Options for hiding the symbol or name of the elements provide a handy learning aid for memorizing the periodic table. Periodic Table of Elements - Sorted by Atomic Mass Average. Immediately find any imaginable information about an element, calculate molar masses of any compounds you like, facilitate your overview with infographics and much more. Use this visual tool for calculating molar mass for any chemical formula. If you need to cite this page, you can copy this text: