In: Physics
14. A 54 Mn sample with mass m = 2g and density ? = 7.3 g/cm 3 is exposedfor t = 2 minutes in a thermal neutron field with a flux density of 10^ 13 (cm ?2 s ? 1 ). How many 55 Mn atoms are produced as a result of thermal neutron capture by the 54 Mn?