Multiple Choice
A researcher needs 5.00 mg of 128Ba for an experiment.If the half-life of 128Ba is 2.43 days,how many milligrams of 128BaCl2 must she order from the manufacturer if it takes 4.50 days to ship the material from the manufacturer to the university? (Assume the molar mass of 128Ba is 128 g/mol. )
A) 11.6 mg
B) 18.0 mg
C) 21.5 mg
D) 44.9 mg
Correct Answer:
Verified
Correct Answer:
Verified
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