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    Half-life of a sample is 1.810^{11} what percentage of the sample will remain after 10^{10} seconds?

    how do i work this out?
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    (Original post by joyoustele)
    Half-life of a sample is 1.8x10^{11} what percentage of the sample will remain after 10^{10} seconds?

    how do i work this out?
    Same problem in a slightly different context here:

    https://www.thestudentroom.co.uk/sho....php?t=5039954
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    (Original post by uberteknik)
    Same problem in a slightly different context here:

    https://www.thestudentroom.co.uk/sho....php?t=5039954
    I've done this already XD, but thank you.
 
 
 
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