Re: Half Life of Radon Gas

For your equation after 30 hours

Now for the half life, find when

Re: Half Life of Radon Gas

Quote:

Originally Posted by

**pickslides** For your equation

after 30 hours

I'm confused at this point, and I think I'm misunderstanding a piece of algebra. Did you take the log of both sides? How were you able to evaluate the b^30?

Re: Half Life of Radon Gas

Well the algebra would suggest taking to both sides, but that leaves you with which maynot be that helpful.

I used a spredsheet to solve for , so use a computer or calculator.

Re: Half Life of Radon Gas

A little mental approximation: so the half-life is a little over 90 hours.

Re: Half Life of Radon Gas

Thanks for the help, I guess I just needed to play around with the numbers a bit.