Afirst-order reaction has a rate constant of 0.33 min-1. it takes min for the reactant concentration to decrease from 0.13 m to 0.088 m

The first order reaction is when the rate of the reaction is directly proportional to the concentrations of one of the reactants.
if the reactant whose concentration determines the rate - N
rate equation is 
rate = k [N]¹
where k - rate constant 
the differential equation is as follows;
[N] = [N₀] e^ (-kt)
where N - concentration after t minutes
N₀ - concentration when t = 0 minutes 
k -rate constant 
t - time taken in minutes 
substituting the values given following equation is obtained 
0.088 m = 0.13 e^ (-0.33 *t)
e^ (-0.33 *t) = 0.088/ 0.13
       -0.33t      = ln 0.676
       - 0.33t     = -0.39
                t = 1.18 minutes
it takes 1.18 minutes for reactant concentration to decrease from 0.13 m to 0.088 m

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus. and thus finally, if we have the 32s2− ion, there are 18 electrons, 16 protons, and 16 neutrons.

Hairy thick gross thing? idk