Remember pH is defined as: pH = -log[H+]
so, substituting
4 = - log[H+]
-4 = log [H+] Take antilog of both sides
10^(-4) = [H+]
[H+] = 1 x 10^-4 M
Core, radiative zone, convective zone, photosphere, chromosphere, corona
To convert km/h into m/s = 5/18
36×5/18
10 m/s
