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Composition of Air

A 10.0 L flas...

Question

A $10.0 L$ flask contains $64 g$ of oxygen at $27^{\circ} C$ . (Assume $O_{2}$ gas is behaving ideally). The pressure inside the flask in bar is
(Given $R = 0.0831 {L bar K}^{- 1} {mol}^{- 1}$ )

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Solution

$P V = n R T$
$P = \frac{n R T}{V}$
$P = \frac{64}{32} \times \frac{0.0831 \times 300}{10}$
$P = \frac{2 \times 0.0831 \times 300}{10} = 4.986 \approx 4.9$

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