Manganese is a key component of enormously hard steel and its element occurs naturally in various oxides. A 542.3 g sample of manganese oxide has an Mn/O ratio of 1.00/1.42 and consists of manganoiste (MnO) and braunite (Mn2O3).
1. Determine the masses of manganosite and braunite are in the ore?
2. Determine the ratio of Mn3+/Mn2+ in the ore?