anonymous
  • anonymous
At the beginning of an experiment, a scientist has 112 grams of radioactive goo. After 225 minutes, her sample has decayed to 14 grams. What is the half-life of the goo in minutes? Find a formula for , the amount of goo remaining at time.? How many grams of goo will remain after 26 minutes?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
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amistre64
  • amistre64
14 = 112e^(225r) 14 ---- = e^(225r) 112 ln(1/8) = 225r r = ln(1/8)/225 ................................... y = 112e^(ln(1/8)/225)t lol
amistre64
  • amistre64
112/2 = 56 56 ---- = 1/2 ..... im getting dumber by the minute lol 112 ln(1/2) ------ = halftime rate
amistre64
  • amistre64
half-life = 75 minutes

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amistre64
  • amistre64
and im thinking 8' 2/3 after 26 minutes
amistre64
  • amistre64
but that last part is prolly wrong
amistre64
  • amistre64
http://www.wolframalpha.com/input/?i=112+e^%28%28ln%281%2F8%29%2F225%29x%29+at+x%3D26 thats better
anonymous
  • anonymous
lol ur fine i thank you for trying and helping:)

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