Ionization Energy in Electron Volts

[mhrokosz]

Homework Statement

(10.) It requires roughly 10 eV to ionize one hydrogen atom. How much energy (in joules) are needed to ionize all the hydrogen atoms in one mole of molecular hydrogen (H2)? [Recall: 1 eV = 1.6 × 10−19 J and Avogadro’s constant is about 6 × 1023.]

Homework Equations

I don't know what equation to use that would include Avogadro's number...this is probably very elementary, I apologize.

The Attempt at a Solution

 

[SammyS]

Don't look for some equation. Think it out.

 

[mhrokosz]

2 atoms;
(1.6 × 10−19 J) x 20? that simple?

 

[xduckksx]

How many hydrogen molecules in a mole?

 

[mhrokosz]

Ahhhh.

(A's# x 2 H molecules)(20 eV)(1.6x10^-19)