In a first order reaction,0.16 moles of reactant decreases to 0.02 moles in 144 minutes,its half life

For the first order reaction A to 2 B ,1 mole of reactant A gives 0.2 moles of B after 100 minutes. The half life of the reaction is ...... min. (Round off to the nearest integer). [Use ln 2 =0. 69, ln 10 = 2. 3 Properties of logarithms : ln x ^(y) = y ln x, ln ((x)/(y)) = ln x - ln y] Round off to the nearest integer)

In a first order reaction, the concentration of the reactant, decreases from 0.8 M to 0.4 M in 15 minutes. The time taken for the concentration to change form 0.1 M to 0.025 M is :

In a first order reaction, the concentration of the reactant decreases from 0.6 M to 0.3 M in 30 minutes. The time taken for the concentration to change from 0.1 M to 0.025 M is

In a first order reaction, the concentration of the reactant, decreases from 0.8 M to 0.4 M in 15 minutes. The time taken for the concentration to change from 0.1 M to 0.025 M is -

In a first order reaction, the concentrations of the reactant, 30 minutes and 40 minutes after the start are C_(1) and C_(2) ( in moles // litre ) respectively . What was C_(0) , initial concentration ?

For a certain first order reaction, the concentration of the reactant decreases to nine-tenth of its initial value in ten minutes. Concentration of the reactant after 30 minutes from start will be :