The eye is a substance of which major body system

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

What is the relationship of air masses and the temperature of oceans?

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.