alexenglish16aozrv5c alexenglish16aozrv5c
  • 01-12-2017
  • Physics
contestada

The half-life of hydrogen-3 (tritium) is approximately 12 years. In how many years will half of a 20-gram sample decay by beta radiation to helium-3?

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kponcedeleon001
kponcedeleon001 kponcedeleon001
  • 05-12-2017
the easiest way to work this out is to think of the amount of decay as a percentage. so in 12 years its down to 50% another 12 years its down to 25%, another 12 years its 11.5 %. 

for a 20 gram sample to decay by half will still be 12 years no matter how many grams one has.
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genesparkles12
genesparkles12 genesparkles12
  • 05-03-2020

Answer: 12 years

Explanation:

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