suppose you have a 150 gram sample of radioactive decay god-191 which has a half- life of 3.4 hours. how many grams of gold will ramain after 10hrs ? after 24 hrs?

Question

answer :
10 hrs :10/3.4= 2.94 times
150*(1/2)^2.94 = 18.75 grams
24 hrs: 24/3.4 = 7.06
150*(1/2)^7.06= 1.12
right ???

Answer 1

k = 0.693/t_1/2
Solve for k.

ln(No/N) = kt
No = 150
N = solve for this
k from above.
t = hours for t and solve for N in grams.

Answer 2

Iinvm