February 24, 2017

Homework Help: chemistry

Posted by Anonymous on Monday, December 5, 2011 at 2:53pm.

A particular radioactive substance has a half-life of 4 minutes. How long will it take for 250 g of this radioactive material to decay to less than 0.1g?
24 min
36 min
40 min
48 min
72 min

I got 32 min but that not one of the choices. Please help

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions