Question

Questions The following atomic masses may be useful for this question Am :246.069775 u. H:1.007825 u. n 1,008665 u. Part 1) What is the mass defect of Americium 2462 Make sure you keep all the significant figures. Part 2) Americlum-246 undergoes beta (-) decay. Select all the products of this decay from the list below. 1.00 2.1, 3. ja 4. Cm 5. "Cm 6.24Pm 8. Am Part 3) The half life of Americium-246 is 39 minutes. After 233 minutes how much Americium-246 would be left in a sample that initially contained = 17.4 grams of Americium-246? Check

Answer 1

1.) Man defect of Am. 246 = 95. Mit + (246-95) Mon - Mam 95 X 1.007825 + 151 X 1.008665 - 246.069775 1.934975 U 2.) -ß decay of A-246 is gren as 3.) ty, = 39 mins = ln2 0.693 39 = 0.017769 min me = mi exp(-xt) - 1714 enf 1-0.17769 x 233] - 0.276996 gram