Hi,

I guess I should have been clearer. By mEq, what I am refering to is really milligrams/liter. The human body has solutions which are dilute, so the measurements are given in mEq, which are milligrams per liter. Example: One mEq of Na+ is 23, divided by one positive charge and is expressed as milligrams = 23 mg/L. In another example, one mEq of Ca(+2)is 40 (atomic weight), divided by two (two positive charges) and is expressed in milligrams as 20mg/L.

Using Na+, we know that one millimole(1/1000 of a mole) of sodium produces one mEq and one mOsm(milliosmole)

For question #1, I know that 1 millimole of magnesium sulfate produces 4 milliequivalants= 3 milliosmoles

I believe a magnesium ion has two positive charges and a sulfate ion has two negative charges.

For question #2, I know that 1 millimole of sodium sulfate produces 4 milliequivalents = 3 milliosmoles

I am not entirely sure about the charges and symbols on the individual particles

Thanks. maybe this makes it a bit clearer.