This is not a mathematical joke so it is off topic and you can ignore it. Instead, it’s a Science Question.
You are handed a large flask with a ground stopcock containing an equiatomic mixture of tritium and helium-3. The internal pressure is approximately 70% of STP.
Your task is to prepare a sample of helium-3 of at least 95% purity.
Both atoms have almost exactly the same mass.
You have a full set of laboratory glassware and clamps, but otherwise you are only allowed to use things or materials that you can purchase at Home Depot.
The best answer is the one that requires the least external energy input per cc of product.
If nobody comes up with the “right” answer I will post it in a day or two.