Answer
$16.132.34\ kg $
$20,092\ L$
Work Step by Step
We first use stoichiometry, making sure that all units cancel out to $kg$, to obtain:
$7682\ L\times 0.8029\ kg/L = 6167.66\ kg$ in the tank
We now use stoichiometry, making sure that all units cancel out to $kg/L$, to obtain:
Missing: $22,300 -6,167.66 =16,132.34\ kg \div 0.8029\ kg/L = 20,092\ L$
