document.write( "Question 1159236: A substance has a half-life of 52 days. If you have 113 grams initially, how much is left after 125 days? \n" ); document.write( "
Algebra.Com's Answer #782209 by ikleyn(52788)\"\" \"About 
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document.write( "First you calculate how many half-life periods are there in 125 days:  \r\n" );
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document.write( "    the number of half-life periods = \"125%2F52\" = 2.404 (approximately).\r\n" );
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document.write( "Then the amount of remaining substance is  \"113%2A2%5E%28-2.404%29\" = 21.350 grams.    ANSWER\r\n" );
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