Ashley C.
asked 07/22/22Help please At the beginning of an experiment
At the beginning of an experiment, a scientist has 240 grams of radioactive goo. After 195 minutes, her sample has decayed to 30 grams. What is the half-life of the goo in minutes? Find a formula for G(t), the amount of goo remaining at time t. G(t) = H How many grams of goo will remain after 23 minutes? You may enter the exact value or round to 2 decimal places.
1 Expert Answer
Mark M. answered 07/22/22
Mathematics Teacher - NCLB Highly Qualified
30 = 240e195k
0.125 = e195k
ln 0.125 = 195k
Solve for k
Substitute for k in
0.5 = ekt, and solve for t
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Mark M.
You need to review formula for growth and decay and the use of logarithms.07/22/22