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chemistry

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A typical intravenous dose of I-125 for a thyroid diagnostic test is 100  Ci. What is this dosage in megabecquerels (MBq)? (3.7 x 1010 Bq = 1 Ci)
my book solved it like this:
100 u Ci * 1Ci/1x10^6uCi * 3.7x10^10/1Ci * 1MBg/1 x 10^6 Bq = 3.7 MBq. My question is where did the 1 x 10^6 u Ci come from?

  • chemistry - ,

    1 Ci = 1E6 microCi
    1 meter = 1E6 micrometers.

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