The useful metal manganese can be extracted from the mineral

Last updated: 8/6/2022

The useful metal manganese can be extracted from the mineral rhodochrosite by a two-step process. In the first step, manganese(II) carbonate and oxygen react to form manganese(IV) oxide and carbon dioxide: 2MnCO3(s) + O₂(g). -> 2 MnO₂ (s) + 2 CO₂ (g) In the second step, manganese(IV) oxide and aluminum react to form manganese and aluminum oxidide: 3 MnO₂ (s) + 4Al(s) 3 Mn(s) + 2 Al₂O3(s) Suppose the yield of the first step is 90.% and the yield of the second step is 69.%. Calculate the mass of manganese(II) carbonate required to make 10.0 kg of manganese.