Get our expert's

answer on brainly

SEE EXPERT ANSWER

Get your **free** account and access **expert** answers to this and **thousands** of other questions.

See more answers at brainly.com

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your **free** account and access **expert** answers to this and **thousands** of other questions

here first of all find the disintegrating constant

i am not sure abt the formula but
it is somewhat like
disintegrating constant =0.693/(hal-life time)

then use
ln (amt present after t yrs/amt initially present) = -(disintegrating constant)* time

@Kira_Yamato Can you explain how you did it?

@dpaInc
@toadytica305
@Kira_Yamato
that's how you solve the problem.
we do not need to stick a negative sign to K because when you solve K will be negative.