A 99Mo / 99mTc generator eluate was assayed at 6 a.m. The amount of 99Mo present in the vial at that time was 85 microcuries and the 99Mo / 99mTc ratio was 0.135. Find the approximate activity (in mCi) for 99mTc at noon:
A.5.74
B. 315
C. 630
D. 0.79
E. 0.162
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A 99Mo / 99mTc generator eluate was assayed at 6 a.m. The amount of 99Mo present...
please show all formulas/work 5. The decay constant of a radioactive source is 0.300/minute. - How much time must elapse before the activity is reduced to… (a) 85%? (b) 25%? (c) 5%? B) The half-life of a radioactive source is 14.0 minutes. - How much time must elapse before the activity is reduced by… (a) 70%? (b) 45%? (c) 20%? C) Radon-222 has a physical half-life of 30.0 days. A 10.24 microgram piece of this source is placed in storage....