Posted by Kipper on Sunday, April 4, 2010 at 6:58pm.
Radon22 has a half life of 4 days. If you begin with 32 grams of radon, how many grams will be left after 20 days?

7th grade  drwls, Sunday, April 4, 2010 at 7:17pm
20 days is 5 halflives.
Divide 32 by two, five times.
That is the same as dividing 32 by 2^5.

7th grade  Kipper, Monday, April 5, 2010 at 12:00am
thank you drwls for the help
Answer This Question
Related Questions
 Chemistry  The half life of radon 222 is 3.82 days. If the initial mass of a ...
 Physical Science  1. Which equation correctly shows beta decay? (A) 210/82 Pb...
 Chemistry  The radioisotope radon222 has a halflife of 3.8 days. How much of ...
 Chemistry  Radon222 is a radioactive gas with a halflife of 4 days. ...
 Chemistry  The halflife of radon222 is 3.82 days. If a sample of gas contains...
 Science  Radium has a halflife of 1620 years and decays into radon, which has...
 chemistry  the halflife of radon222 is 3.823 days. what was the original mass...
 chemistry  The disintegration of a radioisotope, such as I131 to Xe131, is ...
 ALGEBRA  You have 480 grams of a radioactive kind of tin. If its halflife is ...
 Physical Science Help Please!  Suppose that you are given a 100 gram sample of...
More Related Questions