ashxbm0bre8nakun
ashxbm0bre8nakun ashxbm0bre8nakun
  • 03-05-2016
  • Physics
contestada

If there are 50 grams of U-238 on day zero of radioactive decay, how much will there be after 4.5 billion years

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taskmasters
taskmasters taskmasters
  • 14-05-2016
We use the formula of the half-life to calculate for the remaining U-238 after 4.5 billion years. The formula is expressed as A = A₀ (1/2)^(t/h) where A is the final amount, A₀ is the initial amount of the substance, t is the time and h is the half-life of the substance wherein for U-238 h is equal to 4.47 billion years.

A = A₀ (1/2)^(t/h)
A = 50 (1/2)^(4.5 / 4.47)
A = 24.88 g
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keyaracunninghp6kg24 keyaracunninghp6kg24
  • 23-03-2019

25 if using usatsyprep

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