Thank you for your response. I am not a chemist, but the reason I suggested an ounce was to start from somewhere. I would assume an ounce of gold is made up of a combination of the same element.
Now for the free world, it will possibly just have to take from another resource from the Universe, and turn it into the resource we are currently lacking. How I'm visualizing chemicals are just atoms, protons, and neutrons (from basic research) arranged in a specific order to create a type of element, then one can compound that element to form an ounce or gram and so on; so, if this is how it's made by learning to rearrange particles we can practically create anything.
As you said earlier it will require a lot of energy which I think will be the hardest accomplishment.