anonymous
  • anonymous
Pregnant women take 250 mg tablets of as a supplement. The ion present in those pills is poisonous to small children. The ingestion of ion will kill a child. What is the minimum number of whole tablets a 89 ib child needs to ingest to become fatally poisoned?
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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aaronq
  • aaronq
The ingestion of 550 mg Fe ion will kill a 22 lb child. find how many tablets you need to have in total 550 mg Fe.
aaronq
  • aaronq
You need to find the mass percent composition of Fe in FeSO4 first. http://www.chem.tamu.edu/class/majors/tutorialnotefiles/percentcomp.htm
anonymous
  • anonymous
36.7%? is mass percent?

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anonymous
  • anonymous
also, how to find how many tablets I need that has a total of 550 mg Fe?
aaronq
  • aaronq
is that what you calculated?
aaronq
  • aaronq
325 mg tablet * mass% of Fe= mass of Fe per pill then just divide, 550 mg/mass of Fe per pill
anonymous
  • anonymous
4.6 = 5? Thanks! But what was the logic of finding mass percent and multiplying it? Shouldn't the units both be Mg? The units don't match
aaronq
  • aaronq
you should definitely have to be using the same units, i didn't think i needed to explicitly mention this. "4.6 = 5?" what does this mean?
anonymous
  • anonymous
Opps the answer is 5. (rounded up) sorry. it was multiple choice.
aaronq
  • aaronq
The logic of finding the mass percent is to find the percent of the mass of FeSO4 that is actually just Fe, without the S or O's
anonymous
  • anonymous
Oh, thanks! But why are you allowed to multiply it? The units aren't the same?
aaronq
  • aaronq
mass percent doesn't have units.
aaronq
  • aaronq
it's a percent.
anonymous
  • anonymous
oh. I see. Thanks then! I appreciate the help :)

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