This whole set of Chem problems are all inspiring, I do enjoy solving every single one of them. please keep it up, hope we can see more.
Sum of first n terms of a harmonic progression
Remove the two elements next to NaN value
Sophie Germain prime
Pitting corrosion on a metal plate: Count the number of pits
Trace the path of a harmful chemical in an ecological network
Find an optimal placement of coolers on a grid
Design a tubesheet for shell-and-tube heat exchangers
Create a matrix map of increasing safety levels
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