Homework Help: Science math

Posted by Joshua on Monday, January 7, 2013 at 2:57pm.

Suppose a laboratory has a 38 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of polonium-210 occur in 1104 days? How much polonium is in the sample 1104 days later?

Science math - Steve, Monday, January 7, 2013 at 3:16pm
1104/138 = 8 half-lives
after 8 half-lives, 1/256 remains, or 0.148g
Science math - drwls, Monday, January 7, 2013 at 3:18pm
How many half-lives of polonium-210 occur in 1104 days? 1104/138 = 8.0 half-lives

How much polonium is in the sample 1104 days later? 38 g * (1/2)^8 = 0.148 g
Science math - Joshua, Monday, January 7, 2013 at 3:23pm
Thank you both very much.
Science math - Joseph, Thursday, April 25, 2013 at 7:20pm
8; 2,622 g

Answer this Question

Related Questions

calc - The half-life of polonium is 139 days, but your sample will not be useful...
Science - How many days will it take for 3/4 of a sample of polonium 210 to ...
Math - How long will it take for a 1 g sample of Polonium 210 to lose all but 1/...
Math - How long will it take for a 1 g sample of Polonium 210 to lose all but 1/...
Physics - If a polonium-210 (Po-210) atom has just decayed, how close can the ...
Physics - If a polonium-210 (Po-210) atom has just decayed, how close can the ...
physics - If a polonium-210 (Po-210) atom has just decayed, how close can the ...
Nuclear Physics - If a polonium-210 (Po-210) atom has just decayed, how close ...
Nuclear Physics - If a polonium-210 (Po-210) atom has just decayed, how close ...
Chemistry - 40 years ago, the first time a vehicle was driven over an ...

For Further Reading

First Name:
School Subject:
Answer: