Question

If 250 MG of a radioactive element decays 2 a 190 mg in 48 hours find the half-life of the element round your Answer to the nearest whole number

Answer 1

61 hours

Step-by-step explanation:

In this question we will use radioactive decay model

m0= 250 mg

h is the hlf life of element

m(t) is the mass left after t time

so,solving this equation for h

re aranging and taking ln on both the sides we get

solving further we get

h= 60.62 hours ≅61 hour

the half life of element is 61 hours

Step-by-step explanation: