Calculation Of Time

Calculating time requireed to complete a definite fraction of first order reaction : A first order reaction is 20% complete in 10 minutes. Calculate the time taken for the reaction to go to 75% completion. Stratagy : First calculate the rate constant (k) using frist data and then calculate the required time to complete 75% of the reaction by using the value of rate constant :

Calculate 218 times 57.

Gestation period of 280 days is calculated from time of

Calculate the time period of a uniform square plate of side 'a' if it is suspended through a corner.

Calculate the time period of a particle whose acceleration is 5 cm s^(-2) at a distance of 5 cm from the mean posiiton.

A first order reaction is 20% complete in 5 minutes. Calculate the time taken for the reaction to go to 60% complete.

Calculate the time taken by light to travel a distance of 10 km in water of refractive index 4//3 .

The angular velocity of a rigid body is 24 rad s^(-1) , Calculate the time it will take to rotate 72 rad.

A radioactive sample has a half-life of 4 years. Calculate the time in which the activity will be reduced to 25%.