# How many grams are in 0.6 moles of H_2S?

Approx. $20$ $g$.
Hydrogen sulfide has a formula mass of $34.08$ $g \cdot m o {l}^{-} 1$.
$34.08$ $g \cdot \cancel{m o {l}^{-} 1}$ $\times$ $0.6$ $\cancel{m o l}$ $=$ ?? $m o l$?