The equation for the reaction of carbon and nickel dioxide is: NiO + C ----> CO + Ni Calculate the percentage atom economy of this reaction to produce nickel to 3 significant figures.

Using a periodic table, you can find that: Molecular mass of carbon: 12Molecular mass of nickel: 59Formula mass of nickel oxide: 75 (=59+16)
Mass of all the reactants = 12+75=87Mass of the product we want (nickel)=59
Percentage mass = mass of all reactants/mass of product we want x 100 = (59/87)x100=67.816%
The question asks for the answer to 3 significant figures which means the first three numbers that aren't zero, therefore the answer is 67.8%

Answered by Emma N. Chemistry tutor

5012 Views

See similar Chemistry GCSE tutors

Related Chemistry GCSE answers

All answers ▸

A chemist needs to neutralise aqueous hydrochloric acid solution (currently pH 1) to pH 7 or higher, so it can be safely disposed of. They have access to solid NaCl, NaBr and Na2CO3.


What is the difference between an ionic and a covalent bond?


solid magnesium cannot flow, but liquid magnesium can. Explain why. (3)


Why does magnesium oxide have such a high melting point?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences