Question $3($Global Air Quality$)$

$3\mathrm{.}1$ The volume of the atmosphere at STP is approximately $3\mathrm{.}94{10}^{18}{m}^3.$ For over a thousand years prior to the Industrial Revolution, the concentration of $C{O}_2$ in the atmosphere was approximately $280$ ppm $.$ The concentration of $C{O}_2$ in the atmosphere in $2011$ was approximately $390$ ppm $.$ How much $C{O}_2$ has been added to the atmosphere since the industrial revolution? Please give you answer in kg $.$

$[16]$