Arsenic pentasulfide [As2S3] is an inorganic compound of two elements: Arsenic (As) and Sulfur (S). The molecular weight of Arsenic pentasulfide is 310.17319 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

Arsenic trisulfide [As2S3] is an inorganic compound of two elements: Arsenic (As) and Sulfur (S). The molecular weight of Arsenic trisulfide is 246.04119 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

Actinium(III) sulfide [Ac2S3] is an inorganic compound of two elements: Actinium (Ac) and Sulfur (S). The molecular weight of Actinium(III) sulfide is 550.198 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of Actinium and Sulfur.