Q.Liquid benzene ( $C_6H_6$ ) burns in oxygen according to: $2C_6H_6(l) + 15O_2(g) \rightarrow 12CO_2(g) + 6H_2O(g)$ . How many liters of $O_2$ at STP are needed to complete the combustion of $39 \text{ g}$ of liquid benzene?

11.2 L

22.4 L

84 L

42 L

The correct solution involves applying the fundamental concept to derive the final value step by step...

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