depricated syntax

And in my opinion it would be better if it wasn't :)

Julia is coherent with other languages that don't have rationals...

since Julia suports rational number type it could be fun if the solution accept it. Example: 1//2

I did finish it using 0.082 for R. I would argue though that the description does not say it is, but rather a calculation where one of the factors is 0.082.

Those are units, and the only one left is atm when you return the pressure. R is a constant.

Excactly where does R come from ?

The description says "R=0.082dm3⋅atm⋅K−1⋅mol−1", but atm isn't anywhere to be found. Unless you count the return value.
Being a level kyu8 kata it couldn't hurt to give up the number intended used for mol and atm.

I didn't manage to compleate it yet (in nither configuration), so I may be not the best person to verify... but the order is correct. Thank you.

I updated the description, please verify.

In Julia the imputs are lebaled like this: ptotal(M₁, M₂, m₁, m₂...
While the Kata descriptions suggest it's: Six values: m₁, m₂, M₁, M₂...
Please note the confusing diffrence in capitalization.