SOLUTION: You are a scientist researching the decay of a sample of lead. You begin with a sample of 2 grams of the element Pb-211 (lead-211). The amount of the sample you have left after cer

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: You are a scientist researching the decay of a sample of lead. You begin with a sample of 2 grams of the element Pb-211 (lead-211). The amount of the sample you have left after cer      Log On


   



Question 1081602: You are a scientist researching the decay of a sample of lead. You begin with a sample of 2 grams of the element Pb-211 (lead-211). The amount of the sample you have left after certain amounts of time is shown below.
Time (in min):⠀⠀⠀⠀⠀ 10⠀⠀⠀ 20⠀⠀⠀ 30⠀⠀⠀ 40
Pb-211 (in grams):⠀ 1.66⠀ ⠀1.36⠀ ⠀1.12⠀ ⠀0.92
According to the logarithmic regression rounded to 4 decimals, how much lead is remaining after 1 hour? Round to the nearest hundredths.

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
y=2.898-.5273ln x
for 60 minutes, y=2.898-.5273*ln(60)=0.74 gm.