Calculate the percentage atom economy for the production of zinc oxide (ZnO{\text{ZnO}}ZnO) in the following thermal decomposition reaction:
ZnCO3→ZnO+CO2 \text{ZnCO}_3 \rightarrow \text{ZnO} + \text{CO}_2 ZnCO3→ZnO+CO2You must show your working.
(Relative atomic masses, ArA_rAr: C=12\text{C} = 12C=12, O=16\text{O} = 16O=16, Zn=65\text{Zn} = 65Zn=65; Relative formula mass, MrM_rMr: ZnO=81\text{ZnO} = 81ZnO=81)
Practise Edexcel GCSE Chemistry Quantitative analysis with exam-style questions for Foundation and Higher tier. 119 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
