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.
Atom economy is a percentage value which tells you how efficient the product is in comparison to the amount of reactant used.Equation to learn: atom economy = Ar of useful product/Ar of reactantSubstitute the values your give: atom economy = 59/(75+12) = 0.67Multiply by 100 as it is a %: = 67.8% 3sf
PR
Related Chemistry GCSE answers
All answers ▸Why can graphite conduct electricity but diamond can not?
Bromine has an atomic number of 35 but has two stable isotopes- bromine-79 and bromine-81. Given that 51% of bromine atoms are bromine-79 and 49% are bromine-81%, work out the relative atomic mass of bromine to the nearest whole number.
Why does the temperature decrease in the endothermic reaction?
Give two reasons why cryolite is used in the electrolysis of aluminium oxide.