Posted by Anonymous on Tuesday, March 19, 2013 at 12:19pm.
Suppose a laboratory has a 31 g sample of polonium210. The halflife of polonium210 is about 138 days. How many halflives of polonium210 occur in 966 days? How much polonium is in the sample 966 days later?

sciencemath  Steve, Tuesday, March 19, 2013 at 12:20pm
966/138 = 7
7 halflives means that 1/128 of the original 31g remains.

Algebra  Son Ma, Tuesday, November 11, 2014 at 9:25am
Suppose a laboratory has a 31 g sample of polonium210. The halflife of polonium210 is about 138 days. How many halflives of polonium210 occur in 966 days? How much polonium is in the sample 966 days later?

sciencemath  Anonymous, Thursday, April 9, 2015 at 5:43pm
7:.24

sciencemath  Anonymous, Monday, November 23, 2015 at 3:46pm
21
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