After 200 million years, only 1/16 of the original amount of a particular radioactive waste will remain. the half-life of this radioactive waste is how many million years?

Answer : The half-life of this radioactive waste is,

Explanation :

First we have to calculate the rate constant.

Expression for rate law for first order kinetics is given by:

where,

k = rate constant  = ?

t = time passed by the sample  = 200 million years

a = let initial amount of the reactant  = X

a - x = amount left after decay process =

Now put all the given values in above equation, we get

Now we have to calculate the rate constant, we use the formula :

Therefore, the half-life of this radioactive waste is,

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

have a great day because if you dont you and i will be sad