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Science math
Suppose a laboratory has a 38 g sample of polonium210. The halflife of polonium210 is about 138 days. How many halflives of polonium210 occur in 1104 days? How much polonium is in the sample 1104 days later?
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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?
asked by Anonymous on March 19, 2013 
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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?
asked by Anonymous on March 19, 2013 
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Consider that the halflife of Polonium210 is 140 days.What approximate daily percentage of decay does Polonium210 demonstrate?% (Round to two decimals.)(Hint: use the Rule of 70 backwards by dividing by the halflife period
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Suppose a laboratory has a 26 g sample of polonium210. The halflife of polonium210 is about 138 days.?
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How long will it take for a 1 g sample of Polonium 210 to lose all but 1/28 of its radioactivity if the halflife is 140 d?
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How long will it take for a 1 g sample of Polonium 210 to lose all but 1/28 of its radioactivity if the halflife is 140 d?
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The halflife of polonium is 139 days, but your sample will not be useful to you after 95 % of the radioactive nuclei present on the day the sample arrives has disintegrated. For about how many days after the sample arrives will
asked by barb on April 10, 2007 
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Static charge can interfere with the production of plastic products by attracting dust and dirt. to reduce it, manufacturers expose the area to polonium210, which has a halflife of 138 days. How much of a 25.0g sample will
asked by S on July 21, 2016 
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Po210 Ia an alpha emitter with a halflife of 138 days. how many grams of Po210 remain after 552 days if the sample initially contained 5.80g of Po210?
asked by Shay on October 20, 2014