Asked by Jim_R

hey guys im stumped and burning out. Its mid term time. I got 5 midterms and lab test.

i think im making this more complex than needed

what is 10mg/dL Ca in mEq/L

can u show me a simple way using the valence ? My answer doesnt make sense.

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N=(gram solute/mw)/L


(20mg/40.078)dL--->
=0.499 /dL

converts to 5.0 mEq/L

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is there a simpler way by using the normality and valence ?





Answers

Answered by DrBob222
I don't know that it's any simpler. You have used essentially the same thing. I usually do it in steps.
N = number milliequivalents/mL = me/mL and
me = molecular weight/valence
40/2 = 20 = eq wt or 0.02 for meq wt.

10 mg/dl = 0.01 g/0.1L = 0.1 g/L
0.1g/20 = 0.005 eq/L = 5 me/L.
Answered by Jim_R
thanks dr bob
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