The isotope calcium-41 decays into potassium-41, with a half-life of 1.03 × 10^5 years. there is a sample of calcium-41 containing 5 × 10^9 atoms. how many atoms of calcium-41 and potassium-41 will there be after 4.12 × 10^5 years? how many calcium and how many potassium?

1.) Find The Number of Half Lives Passed:

half lives

2.) Calculate Number of Ca Atoms remaining:

atoms left

3. Calculate Number of Potassium Atoms

Subtract the final number of Calcium atoms from the initial amount of calcium atoms.

Atoms of Potassium

it would be a gas formation

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.