Question

Ten moles of hydrogen sulfide, H2S, would consist of how many molecules?

Answer 1

The number of molecules contained in 1 mole of H2S is exactly equal to the Avogadro number:

`N_A = 6,022 \cdot 10^(23) mol^(-1)`

Therefore, 10 moles of H2S will contain a number of molecules equal to 10 times the Avogadro number:

`N=10 mol \cdot N_A = 6.022 \cdot 10^(24)`