Answer to Question #168499 in General Chemistry for Vanessa Gutierrez

Question

How many hydrogen atoms are in 25.0 g of water?

Answer 1

number of moles of water = 25g/16gmol^-¹

= 1.563mol

H₂O_(l) -> 2H⁺_(g) + ½O^2-_(g)

Therefore in 1.563 moles of water, there are 3.125 moles of hydrogen atom

3.125 moles of hydrogen atom = 3.125 (6.02×10²³) = 1.88 × 10²⁴ hydrogen atoms.