Answer letter d
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Answer letter d
![226
1. A radium source contains 50 mg of ²3ºRa in equilibrium
88
with all its progeny. Assuming T₁/2 is 1602 yr:
a) What is the decay constant for 22 Ra?
b) What is its mean life?
88
c) How many atoms of 228Ra does the source contain, based upor
its mass and assuming that 226 g = 1 mole?
d) How many atoms of 2Ra does it contain, based upon its
activity?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6eeb5131-c5ab-4f47-9249-1fe52617ff00%2Fd075d2fa-03bb-4922-9e03-f44bc179fe4a%2F11cfr9_processed.png&w=3840&q=75)
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