Calculate the H+ for number #2

Question

#2 : H+ = 10^-2, with a pH of 2

Not sure how to calculate H+

Answer 1

Ok I think i got it

H+= 10^pH
H+=10^2
H+=100M
In the next question it asked to calculate the pH now.
pH=-log (1OOM)
pH= -2

Is this right or did I do this wrong :(

Answer 2

Ok I guess theres suspose to be a negative sign here...10^-pH
so really its 0.1 M
with a pH= 2

Answer 3

0.1 M is pH = 1
Yes, it is (H^+) = 10^-pH
If you have (H^+) = 10^-2, that is 0.01