Archive for November 8th, 2008

For 1.8 mole of the radioactive isotope molybdenum-99, half-life = 67 hours, how many disintegrations have occ

Saturday, November 8th, 2008
henrick asked:


For 1.8 mole of the radioactive isotope molybdenum-99, half-life = 67 hours, how many disintegrations have occured after 17 minutes?

Enter an answer of at least three significant figures.

Enter a numeric answer only do not include units.

To enter a number in exponential notation use an e for x 10 eg 2.34 x 106 enter as 2.34e6 2.34 x 10-16 enter as 2.34e-16

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