Re-excavation of King Tutankhamun's tomb has revealed an undiscoered chamber. You are a metallurgist working for the Museum of Cairo and have been tasked with protecting the priceless artefacts found in the tomb from being corroded further than they already have been.
![A picture of two Egyptian sarcophagi. Image from Dreamstime.](/pbl/sites/files/pbl/styles/full_width_m/public/shared/corrosion_of_metals.jpg.webp?itok=sHPssW7e)
Problem written by: Izzar Linares
Curriculum items covered: Oxidation and reduction, electrochemical cells, reduction potentials.