Answer: After three half-lives 1/8 (12.5%) of the original sample remains
Conservation, because you are conserving natural resources(water) and reusing aluminum cans which help the environment. Hope this helps!
40.0 g ( 1 mole ) --------------- 6.02x10²³ molecules
? ? --------------------------- 2.90x10²² molecules
mass = 2.90x10²² * 40.0 / 6.02x10²³
mass = 1.16x10²⁴ / 6.02x10²³
mass = 1.9269 g
hope this helps!
Silver is Ag from the latin Argentum
Lead is Pb from the latin Plumbum
