Yttrium-90 is used in radioisotope therapy to treat various neuroendocrine tumors.Yttrium-90 has a half-life of 64 h. A sample of 90Y has an activity of 5×107 Bq when first measured. (a) What is the decay constant for 90Y ? (in s−1)? (b) What will the activity of the sample be after 256 h?
Yttrium-90 is used in radioisotope therapy to treat various neuroendocrine tumors.Yttrium-90 has a half-life of 64 h. A sample of 90Y has an activity of 5×107 Bq when first measured. (a) What is the decay constant for 90Y ? (in s−1)? (b) What will the activity of the sample be after 256 h?
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8. Yttrium-90 is used in radioisotope therapy to treat various neuroendocrine
tumors.Yttrium-90 has a half-life of 64 h. A sample of 90Y has an activity of 5×107 Bq when
first measured. (a) What is the decay constant for 90Y ? (in s−1)? (b) What will the activity of the sample be after 256 h?
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