hat$(....)$ a certain temperature the rate of this reaction is first order in $S{O}_3$ with a rate constant of $0\mathrm{.}0477s^{-1}$ :

$2S{O}_3(g)2S{O}_2(g)+O_2(g)$

Suppose a vessel contains $S{O}_3$ at a concentration of $0\mathrm{.}190M.$ Calculate the concentration of $S{O}_3$ in the vessel $13\mathrm{.}0$ seconds later. You may assume no other

reaction is important.

Round your answer to $2$ significant digits.