For pH you use log to the base 10, the inverse of this is raising the log to the power of 10
in your case
It may seem easy but i have an exam soon and i have forgotten how to undo logs!
This is for chemistry and involves the equation to find pH.
pH = -log [concentration of Hydronium Ions]
or in more maths terms
y = -log x
I can't really believe i have forgotten this but i just cant do it. I need 'x' to be the subject.