Homework SourseA vial contains radioactive iodine131 with an activity of 20
A vial contains radioactive iodine-131 with an activity of 2.0 mCi/mL. If a thyroid test requires 3.0 mCi in an \"atomic cocktail.\" how many milliliters are used to prepare the iodine-131 solution? 1.5 times 10^-3 mL 1.5 mL 1.5 times 10^3 mL 6.0 times 10^-3 mL 6.0 mL 6.0 times 10^3 mL![A vial contains radioactive iodine-131 with an activity of 2.0 mCi/mL. If a thyroid test requires 3.0 mCi in an \](/WebImages/8/a-vial-contains-radioactive-iodine131-with-an-activity-of-20-996171-1761512727-0.webp "A vial contains radioactive iodine-131 with an activity of 2.0 mCi/mL. If a thyroid test requires 3.0 mCi in an \")
Solution
Answer: 1.5 mL
Stock of I-131 activity = 2 mCi/mL
Required= 3 mCi
Cross multiplication.
2mCi------>1mL
3mCi------>= (3mCi x 1mL)/2mCi = 1.5 mL
