An equation for the reaction is: NiO + C -> Ni + CO Calculate the percentage atom economy for the reaction to produce nickel. Relative atomic masses (Ar): C = 12 Ni = 59 Relative formula mass (Mr): NiO = 75. Give your answer to 3 significant figures.

Step 1: Work out the total Mr of the reactants: Total Mr = 75+12=87Step 2: Find the total Mr of useful product, which in this case in Nickel:Total Mr = 59Step 3 : Percentage atom economy = Mr of useful product/Mr of total reactant:(59/87)x100= 67.8% (3 s.f.)