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Q.
The weight of $11.2 \,L$ of $ CO_{2} $ at STP would be
AMUAMU 2000
Solution:
Volume $(S T P)=$ mole $\times 22.4\, L$
The volume of one mole of gas at $S T P=22.4 \,L$
Mass of $1$ mole of $CO _{2}=12+2 \times 16$
$=44\, g$
$\because$ The weight of $22.4\, L$ of $CO _{2}$ at $STP =44\, g$
So, the weight of $11.2\, L$ of $CO _{2}$ at STP
$=\frac{44}{22.4} \times 11.2=22 \,g$