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

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

answermeridional ;