Posted by melissa on Wednesday, December 10, 2008 at 5:24pm.
the halflife of polonium218 is 3.0 minutes. what percentage of the original sample remains after 4 halflives?

chemistry  bobpursley, Wednesday, December 10, 2008 at 5:26pm
amount left= (1/2)^4=1/2^4=1/4^2=1/16

chemistry  bob, Thursday, May 19, 2011 at 9:23pm
The halflife of polonium218 is 3.0 min. If you start with 16 mg of
polonium218, how much time must pass for only 1.0 mg to remain?

chemistry  no, Tuesday, November 17, 2015 at 11:14pm
nohonob
Answer This Question
Related Questions
 algebra  Consider that the halflife of Polonium210 is 140 days.What ...
 Science math  Suppose a laboratory has a 38 g sample of polonium210. The half...
 sciencemath  Suppose a laboratory has a 31 g sample of polonium210. The half...
 science  Suppose a laboratory has a 31 g sample of polonium210. The halflife ...
 chemistry  If there are 80 milligrams of a radioactive element decays to 10 ...
 chemistry  an original sample of K40 has a mass of 25.00 grams. After 3.9x 10 ...
 chemistry  Find the number of disintegrations per minute emitted by 1.1 mol of...
 Chemistry  Po218 is an alpha emitter with a halflife of 3.0 minutes. If a ...
 Chemistry  Which radioactive sample would contain the greatest remaining mass ...
 Science Half Lives  I am confused about how to claculate half lives. Can you ...
More Related Questions