Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars every day. Although the actual process also requires water, a simplified equation (with rust shown as Fe2O3) is 4Fe(s)+3O2(s)→2Fe2O3(s)ΔHrxn=?1.65×103kJ
a) How much heat is evolved when 0.250 kg of iron rusts?
b) How much rust forms when 4.85×103kJ4.85×103kJ of heat is released?