I'm doing an OCR salter's past paper (June 2005) on Natural Resources and there's a question about Avogadro constant which I thought I understood.
I did the question etc. but when I compared with the answer I was completely wrong and when I tried out the example answer it comes out wrong too. So either the mark scheme is wrong, or I'm being completely thick so please help!
The bond enthalpy of the C-F bond is +467 kJ mol-1. Calculate the minimum energy in joules needed to break a single C-F bond.
Avogadro constant, L=6.02 x 10^23 mol-1
Example answer: 467 x 6.02 x 10^23 x 1000 = 7.75 x 10^-19 J My answer: 467000 x 6.02 x 10^23 = 2.81 x 10^29 J