Arsenic trioxide [As2O3] is an inorganic compound of two elements: Arsenic (As) and Oxygen (O). The molecular weight of Arsenic trioxide is 197.84139 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.
![Arsenic Trioxide [As2O3] Molecular Weight Calculation](https://www.laboratorynotes.com/wp-content/uploads/2023/04/fi-arsenic-trioxide-molecular-weight-calculation-100x91.jpg "Arsenic Trioxide [As2O3] Molecular Weight Calculation")