How much ground flax seed do I need to make 25g?

I bought flax seed that had apparently been bought in bulk and repackaged. The bag has no specs on it so I was hoping that someone could tell me a measurement to use so that I can add this to my diet throughout the day in order to get the recommended amount.

Can you replace flour with ground flax seed in a recipe?

Benefits of Flax seed?

How much flax seed should one consume daily to help reduce colesterol?

What kinds of food should/could I put ground flax seed into?

How do I convert the amount of whole flax seed needed in a recipe to a ground amount?

question about flax seed?

Does flax seed give you a bigger appetite?

flax seed oil and multi vitamin?

What brand of flax seed is the best to buy?

How do you eat/prepare flax seed?

Should I crush flax seed?

Is it BAD to use flax seed that’s been kept in tupperware OUT of the fridge/freezer for months?