Answer to Question #182418 in General Chemistry for koo

Question

The initial amount of the radioactive material V in a rock is determined to be 6.78 mg. Only 1.46 mg are left of V after 1002 years. How much of the radioactive material, V, decayed after the aforementioned 1002 years if the half-life of V is 452.3055 years? Express your final answer in mg. 

Answer 1

= 6.78 - 1.46 = 5.32mg

452.3055 × 5.32/1002

= 2.40146

= 2.4015mg