SOLUTION: Hello, I'm Janice! I ned some help with this one problem. I get so confused 1. How many milliequivalents of calcium are in a tablespoonful solution containing 250mg of calcium

Algebra ->  Equations -> SOLUTION: Hello, I'm Janice! I ned some help with this one problem. I get so confused 1. How many milliequivalents of calcium are in a tablespoonful solution containing 250mg of calcium       Log On


   

Question 22965: Hello, I'm Janice!
I ned some help with this one problem. I get so confused
1. How many milliequivalents of calcium are in a tablespoonful solution containing 250mg of calcium chloride (CaCl 2)? Atomic Weight of Ca++ = 40; Cl- =35.5)
Please Help
Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
FIRST FIND MILI GRAM EQUIVALENT MOLECULAR WEIGHT OF CALCIUM CHLORIDE FROM ITS FORMULA ..THERE IS 1 TOM OF CALCIUM AND 2 ATOMS OF CHLORINE IN IT.HENCE M.WT. =1*CA+2*CL=1*40+2*35.5=111...SO
IN 111 MG OF CACL2 WE HAVE 40 MG.EQV. OF CALCIUM
IN 250 MG OF CACL2 WE SHALL HAVE 250*40/111=90 MG.APPROXIMATELY