Answer:
97200yrs,
Explanation:
Given parameters:
Half-life of Plutonium - 239 = 24300yrs
Mass of the isotope = 8kg
Unknown:
Number of years it will take for the amount to reduce to 1kg = ?
Solution:
The half -life of any substance is the time taken for half of the compound to decay to half its original composition.
<em> Start first half life second half life third half life</em>
mass 8kg 4kg 2kg 1kg
Time 0yrs 24300 48600 97200
By 97200yrs, the mass would have been 1kg
All matter is made of tiny particles called atoms, molecules and ions; the tiny particles in solids are tightly packed and can only vibrate. The particles in liquids also vibrate but are able to move around by rolling over each other and sliding around. In gases, the particles move freely with rapid, random motion.
Salt and water
Sugar and water
Kool-aid and water