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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 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?
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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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What is the halflife of polonium218 if 5.37 minutes are required for the activity of a sample of polonium218 to fall to 29.5 percent of its original value?
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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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the halflife of polonium218 is 3.0 minutes. what percentage of the original sample remains after 4 halflives?
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a medical institution request 1 gram of bismuth214 which has a half life of 20 min. How many grams of bismuth214 must be prepared if the shipping time is 2 hours.
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The halflife of polonium218 is 3.0 minutes. If you start with 30.0 g, how long will it be before only 1.1 g remains?
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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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