####20. Assuming fully decomposed, the volume of $CO_2$ released at STP on heating $9.85 g$ of $BaCO_3$ (Atomic mass, $Ba=137$ ) will be
[2000]
(a) $2.24 L$
(b) $4.96 L$
(c) $1.12 L$
(d) $0.84 L$
As $197 g$ of $BaCO_3$ will release
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