## anonymous 3 years ago A sample of rock is found to contain 200 grams of a parent isotope. How many grams of the parent isotope will remain after one half-life

1. mathslover

Hello @babymomma123456 : ${\boxed{\boxed{\LARGE{\stackrel{\color{red}{\ast\qquad\star\qquad\ast\qquad\star\qquad\ast\qquad\star\qquad\ast\qquad\star}}{\mathscr {\color{orange}{Welcome } \quad \color{green}{To}\quad \color{purple}{OpenStudy }!!}}}\\{\color{pink}{\ast\qquad\star\qquad\ast\qquad\star\qquad\ast\qquad\star\qquad\ast\qquad\star}}}}}$ Please put this question in chemistry section. You can search for the chemistry section by clicking on the 'Find more subjects' tag. Please refer to the following link to begin with OpenStudy . $$\large{\textbf{A guide to OpenStudy : }}$$ http://prezi.com/fs3hqdpcopic/an-unofficial-guide-to-openstudy/ And : OpenStudy code-of-conduct : http://openstudy.com/code-of-conduct

2. anonymous

*HALF* life. HALF. H.A.L.F. $\Large \textbf{HALF}.$ huge clue. And @mathslover, that's too flashy ;P

3. AravindG

^^agreed

4. mathslover

:) The LaTeX used by me doesn't slow down the page and also the welcome to OS latex I used is taken from the hartnn's post.

5. anonymous

I would say a Half Life of 3 but Valve is too stubborn for that!