Radioactive material undergoes first order dissociation kinetics.
For 1st order system,
k = 0.693 / t1/2
where, t 1/2 = half-life of the radioactive disintegration process.
Given that, t 1/2 = <span>73.83 days
Therefore, k = 0.009386 day-1
Also, for 1st order reaction,
k = </span>

Given that, Co = initial concentration of <span>Iridium-192 = 100 g
Therefore, </span>0.009386 =

On rearranging we get,
Ct = 100
Answer: Ct = 100

equation approximates the amount of Iridium-192 present after t days
A circuit is a closed loop that electrons can travel in. A source of electricity, such as a battery, provides electrical energy in the circuit. ... The appliance may, for example, provide light or heat or mechanical energy.
Hi Lara
The answer is : C
Is equal to
I hope that's help!
It is a basic liquid.
Hope it helped!