The isotope ""(19) K^(42) has a half lif...

The isotope `""_(19) K^(42)` has a half life of about 12 hours. What fraction of the initial concentration of `""_(19)K^(42)` remains after 48 hours.

44200

44204

44208

44212

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

CHEMICAL KINETICS
MODERN PUBLICATION|Exercise PROBLEM|40 Videos
ALDEHYDES, KETONES & CARBOXYLIC ACIDS
MODERN PUBLICATION|Exercise EXCERCISE|343 Videos
CHEMISTRY IN EVERYDAY LIFE
MODERN PUBLICATION|Exercise EXCERCISE|210 Videos

Similar Questions

Explore conceptually related problems

C-11 is a radioisotope of carbon. Its half life is 20 minutes. What fraction of the initial number of C-11 atoms in a sample will have decayed away after 80 minutes ?

The decomposition of N_(2) O_(5) in "CCI"_4 solution at 318 K has been studied by monitoring the concentration of N_(2) O_(5) in the solution. Initially, the concentration of N_(2) O_(5) is 2.33 M and after 184 minutes, it is reduced to 2.08M. The reaction takes place according to the equation, 2N_(2) O_(5) to 4NO_(2) + O_(2) . Calculate the average rate of this reaction in terms of hours, minutes and seconds. What is the rate of production of NO_2 during this period.

In a first order reaction, A to B , if k is rate constant and the initial concentration of the reactant A is 0.5 M, then half-life is

A 1st order reaction has K value 1.5xx10^(-6) at 200^@C . The reaction is allowed to continue for 10 hours. Calculate the percentage of initial concentration that would have changed in the product and also calculate half life period.

Consider a certain reaction A to products, with k = 2.0 xx 10^(-2)" s"^(-1) . Calculate the concentration of A remaining after 100 s if the initial concentration of A is 1.0 mol "L"^(-1) .

MODERN PUBLICATION-CHEMICAL KINETICS-PROBLEM

The isotope ""(19) K^(42) has a half life of about 12 hours. What frac...
Text Solution
|
Calculate the rate constant of a reaction (first order) which is 90% c...
Text Solution
|
What is half time period ? A first order reaction takes 69.3 minutes f...
Text Solution
|
The rate constant of first order reaction is 0.346 min^(-1). What is t...
Text Solution
|
The rate constant of 1st order is 0.0005min^(-1) . Find its half life ...
Text Solution
|
The half life period of a 1st order reaction is 300 seconds. Calculate...
Text Solution
|
A first order reaction takes 69.3 minutes for 50 % completion. How muc...
Text Solution
|
The rate of reaction is doubled when the temperature changes from 27^@...
Text Solution
|
Find the value of activation energy of a reaction whose rate of reacti...
Text Solution
|
A chemical reaction 2A to 4B + C in gas phase occurs in a closed vesse...
Text Solution
|
Name of the metal which present in chlorophyll.
Text Solution
|
The half-life period of a reaction is 60 s. Calculate its rate constan...
Text Solution
|
The rate constant of a first order reaction is k =7.39 xx 10^(-5) " s"...
Text Solution
|
Rate constant of a 1st order reaction is 0.5 s^(-1). What is the half...
Text Solution
|
The order of a reaction having the rate expression, rate = k [A]^(1//...
Text Solution
|
The rate of decomposition of NH(3) on platinum surface is zero order. ...
Text Solution
|
The rate of most reactions become double when their temperature is rai...
Text Solution
|
The half-life for radioactive decay of ""^(14)C is 5730 yr. An archaeo...
Text Solution
|
Calculate the half life of the first order reaction from their rate co...
Text Solution
|
The rate constant of the decomposition of N(2)O(5) is 6.0 X10^(-4) s^(...
Text Solution
|
A first order reaction is 25% completing 30 minutes. How long will it ...
Text Solution
|