How long will it take before only 1.00% of the origional amount of Ar-41 is left?

Argon- 41 is used to measure the rate of gas flow. it has a decay constant of 6.3 x10^-3 min ^-1
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1 Answer

sound tu me like yu hav exponential dekae

"leek rate" =0.0063 per minut

how much left=(start much)*e^-0.0063x

yu wanna find x so that left=0.01*(start)

or e^-0.0063x=0.01

ln(e^-0.0063x)=-0.0063x =ln(0.01)=-4.605170186

x=-4.60517018/-0.0063

=730.979

or bout 731 minuts

or 12.183 ours
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