# Curium has a half life of 1.5 hours, how much of a 1000g sample remains after: 1.5 hrs? 3hrs? 4.5 hrs? 6hrs?

##### 1 Answer

Jun 19, 2018

Let's assume the radioactive decay of curium follows first-order kinetics.

Given,

Recall,

Let's derive the rate constant,

and rearrange (2),

Hence,

is how your data would work out.

*Note: I used a relatively advanced method to solve this, lots of beginning chemistry students use simple arithmetic,*