The decay constant for a radioactive nuclide is 1.5x10^(-5)s^(-1). Atomic weight of the substance is 60 g mole^(-1).(N_A=6x10^22).The activity of 1.0 `mu`g of the substance is ______ `xx`10^10Bq.

They decay constant of radioactive element is 1.5xx10^(9)s^(-1) Its mens-life (in second) will be

The decay constant of radioactive substance is 4.33 xx 10^(-4) per year. Calculate its half life period .

The decay constant for the radioactive nuclide 64Cu is 1.516 xx 10^(-5) s^(-1) . Find the activity of a sample containing 1mug of ^64Cu . Atomic weight of copper = 63.5 g mole^(-1) . Neglect the mass difference between the given radioisotope and normal coper.

If 8g of a radioactive substance decays into 0.5 g in 1 h, then the half-life of the substance is

The value of decay constant of Co^(60) is 2.5xx 10^(-7)"min"^(-1) . The activity of 2.0 g of the sample is nearly :

The decay constant for an alpha- decay of Th^(232) is 1.58xx10^(-10)s^(-1) . How many alpha- decays occur from 1 g sample in 365 deys ?

The half life of radioactive substance is 1.1xx10^7 s. What is the decay rate for 4.4xx10^15 atoms of the substance ?

If 5 g of a radioactive substance has t_(1//2) = 14 h, 10 g of the same substance will have t_(1//2) equal to

The rate constant of a reactant is 1.5 xx 10^(-3) at 25^(@)C and 2.1 xx 10^(-2) at 60^(@)C . The activation energy is