Molecular Calculator features: 103 elements and all their stable isotopes. Easy button-access to 24 of the most common elements. Other elements can be inserted by using the keyboard - simply touch the formula edit field and keyboard will pop up. Argumented input: By inserting 2mNaCl (2 moles of NaCl) it calulates the mass in grams. By inserting 2gNaCl (2 grams of NaCl) it calculates the mol amount. By inserting 2mC,CH3COOH (a total of 3 moles of C in the compund) it calculates both moles and mass for the compund. By inserting 2gC,CH3COOH (a total of 3 grams of C in the compund) it calculates both moles and mass for the compund. Structural formulas such as CH3-CH2-CH2-COOH can be inserted an calculated. Crystal water CaCl2*5H2O Neg. charged ions such as SO4-2 or SO4-- Pos. charged ions such as Fe+3 or Fe+++ Comunds containing isotopes H2O or D2O (Heavy water) or enriched compunds such as CH4 Calculation of statistics such as: -Moles of different elements or isotopes in a compund. -Mass of each element in a compund -Mass% of each element in a compund.