Question

What is a first order half life graph?

Answer 1

Well, first-order half-lives are constants with respect to reactant concentration...

`t_(1//2) = (ln2)/(k)`

where `k` is the first-order rate constant in `"s"^(-1)`...

So, presumably, you mean, a regular concentration vs. time graph on which the half-life is marked...

![)

Apparently, this reactant has a half-life of `"100 s"`. How much time passes until one reaches the second half-life from time zero?