Question

the free energy of pure metals is higher than the corresponding oxides for most metals under normal atmospheric condition. State true/false?​

Answer 1

Answer of this question is False

Answer 2

Answer:

The embodied energy of the common metals varies widely, from typically around 20 MJ per kilogram for lead and steel to over 200 MJ per kilogram for aluminium (Figure 1.) The chemical transformation stages (leaching, smelting, electrowinning, etc) contribute the largest component and mining the least.