What is the hydronium ion concentration in a solution of HCl that has a pH of 4.65?

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

What effect might melting sea ice have for people who live in coastal areas?

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space