Chemistry, 12.01.2021 16:10 tiannaetzel
For these problems, use the formula
Final mass x 2^H = Original mass, where H= # of half lives
4. If carbon-11 has a half life of 20 minutes, how long would it take for 1000g to decompose down to 31g?
5. If 40g of Rhodium-101 decompose down to 5g in 9 years, what is the half life of Rhodium-101?
6. Einsteinium-255 has a half-life of 40 days. What was the starting mass if there are 15g left after 200 days?
Answers: 1
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For these problems, use the formula
Final mass x 2^H = Original mass, where H= # of half lives
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