I think it’s 35w because you distribute: 24w+11w ) and then you add.
The probability is <span>5.55555555555556% or rounded is 6%.</span>
Answer: 693 years
Step-by-step explanation:
Expression for rate law for first order kinetics is given by:

k = rate constant
t = time taken for decomposition = 1
= Initial amount of the reactant
= amount of the reactant left =



for half life : 

Putting in the values , we get


Thus half life of this isotope, to the nearest year is 693.