How much potassium in potassium chloride?

One atom for each, the formula (KCL) consists of potassium (K) and chloride (Cl)

I don't know exactly, but I'll give you a clue. It's probably at least 100 mg and up to 600 mg of elemental potassium, because you can buy 100 mg elemental potassium tablets and up to 166 mg...

52.45% K. Because: The formula for Potassium Chloride is KCl because K+ + Cl- --> KClAtomic weight of K: 39.0983Atomic weight of Cl: 35.4527total: 74.55139.0983/74.551 = .52445 so in percent form...

No, it is a compound of elemental potassium.

Answer: Zero.