Friday
December 19, 2014

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:
Answer:

Related Questions

Science- Radioactive Dating - Which of the following statements about ...
Math - A radioactive substance decays according to the formula Q(t) = Q0e−...
Math - A radioactive substance decays according to the formula Q(t) = Q0e−...
Math - D.E.Q. - The half-life of a radioactive isotope is the amount of time it ...
chemistry - If there are 80 milligrams of a radioactive element decays to 10 ...
Math-Exponential Decay - A lab technician had 58 grams of a radioactive ...
Algebra 2 help... - A half life of a certain radioactive is 36 days. An initial ...
Chemistry - How many half lives will it take for a sample of a radioactive ...
math - An unknown radioactive element decays into non-radioactive substances. In...
chemistry - a radioactive material is undergoing nuclear decay. After 40 minutes...

Search
Members