In a system in which two radioisotopes A and B are in equilibrium and ratio NA/NB is 4.0times10^(5). If t1/2 of A is 4times10^(6) years,then calculate the t1/2 for "B" ,(in years) "

A rock is found to contain U-238 and Pb-206 in the ratio of 3 : 2. If t""_(1//2) of U-238 is 4.5xx10""^(-9) years. Calculate the age rock?

The ratio of the atoms of two elements A and B at radioactive equilibrium is 5.0 xx 10^(5) : 1 respectively. Calculate half life of B if half life of A is 245 days.

At radioactive equilibrium, the ratio between two atoms of radioactive elements A and B is 3.1 xx 10^(9) : 1 . If the half-life period of A is 2 xx 10^(10) years, what is the half-life of B ?

Age of A is 1.5 times of B. The ratio of their ages after 10 years is 4 : 3. then what is the current age of B?

Simplify: 10^(-1)times10^(2)times10^(-3)times10^(4)times10^(-5)times10^(6)

Satellites A and B are revolving around the earth. The mass of A is 10 times to mass of B. The ratio of time period (T_A/T_B) is x. Find x.

If a sum doubles in 6 years, how much will it be in 8 years? 1 1/2 times (b) 1 1/3 times (c) 1 1/4 times (d) 1 3/4 times

For the reversible reaction A harr B at equilibrium ([B])/([A]) = 6times10^(4) - (d[A])/(dt) = 3times10^(6)s^(-1) [A] - (d[B])/(dt) =K[B] . Thus K is

The rate of a reaction starting with initial concentration of 2 xx 10^(-3) and 1 xx 10^(-3) M are equal to 2.40 xx 10^(-40) and 0.60 xx 10^(-4) M s^(-1) , respectively. Calculate the order or reaction w.r.t. reactant and also the rate constant.