# What is the formula mass of sulfuric acid?

$98.08 \cdot g \cdot m o {l}^{-} 1$........
Conc. sulfuric acid is approx. "98% $\text{w/w}$, with a concentration of $18 \cdot m o l \cdot {L}^{-} 1$ and $\rho = 1.84 \cdot g \cdot m {L}^{-} 1$.