To calculate the number of mmol of potassium corresponding to 52 meq, we can use the following conversion:

1 meq (milliequivalent) = 1 mmol (millimole) / valence

In the case of potassium, the valence is 1, so 1 meq of potassium is equivalent to 1 mmol of potassium. Therefore, 52 meq of potassium is equal to:

52 meq * (1 mmol / 1 meq) = 52 mmol

So, 52 meq of potassium is equivalent to 52 mmol of potassium.