Acertain first-order reaction is 58% complete in 95 s. what are the values of the rate constant and the half-life for this process?

and 20.86 seconds are the values of the rate constant and the half-life for this process respectively..

Explanation:

Expression for rate law for first order kinetics is given by:

where,

k = rate constant  

t = age of sample

= let initial amount of the reactant  

a = amount left after decay process  

We have :

t = 95 s

Half life is given by for first order kinetics::

and 20.86 seconds are the values of the rate constant and the half-life for this process respectively..

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j