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-rwxr-xr-x24/CH43/EX43.5/Example43_5.sce13
-rwxr-xr-x24/CH43/EX43.5/Example43_5_result.txt2
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diff --git a/24/CH43/EX43.5/Example43_5.sce b/24/CH43/EX43.5/Example43_5.sce
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+//Given that
+M = 2.71 //in g
+R = 4490 //in Bq
+fraction = 1.17/100
+Mo = 74.555 //gm/mol
+Na = 6.023*10^23 //n /mol
+
+//Sample Problem 43-5
+txt = mopen('Example43_5_result.txt','wt')
+mfprintf(txt, '**Sample Problem 43-5**\n')
+Nk = Na * M * fraction/Mo
+Th = log(2)*Nk/R
+mfprintf(txt, 'The half life of the substance is %eSec', Th) \ No newline at end of file
diff --git a/24/CH43/EX43.5/Example43_5_result.txt b/24/CH43/EX43.5/Example43_5_result.txt
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+**Sample Problem 43-5**
+The half life of the substance is 3.954307e+016Sec \ No newline at end of file