Answer to Question #91805 in General Chemistry for jimbo

Question

How many hydrogen atoms are in
8.50 mol
8.50 mol
of ammonium sulfide?

Answer 1

First, the number of ammonium sulfide molecules should be calculated:

N = N_A × n,

where N_A - the Avogadro number, n - number of moles.

N (ammonium sulfide) = 6.022 × 10²³ × 8.5 mol = 51.187 × 10²³.

The moelcular formula of ammonium sulfide is (NH₄)₂S. It means that each molecule contains 8 hydrogen atoms.

As a result, 8.5 mol of (NH₄)₂S contain:

51.187 × 10²³ × 8 = 41 × 10²⁴ hydrogen atoms.

Answer: 41 × 10²⁴ hydrogen atoms