A fuel cell consumes 0.1 g of hydrogen (Molecular weight 1 g mol-1 ) per

minute. Calculate the current (A) that can be delivered by the fuel cell

and the charge in coulomb (C) that the fuel cell produces when it

operates for one hour (F = 96485 C mol-1 ).

Describe the reaction that causes the carbonation of concrete and discuss

its effects on the carbonation of reinforced concrete structures.