00:01
Hello everyone, my name is ahmad ali.
00:03
Now i will answer the question, what does the term half -life time mean? and write the expression for half -life of zero order, first order and second order.
00:20
To answer this question, we must first look at this equation.
00:27
This equation is in the number of reactant a -moly.
00:32
Cure form a product p.
00:34
Here for simplicity we consider the n is the order.
00:40
At the start of this reaction, which you mean at t equal zero, the concentration of reactant a is a -not.
00:51
After time t is a concentration of reactant a become a, which is lower than a knot.
01:00
And at t half, which she is half life...