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Density of oxygen gas at 1 atmosphere and 273 K is ‘d’. Density of helium gas at 2 atmospheres and 273⁰ c will be

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0.5 d

0.25 d

0.125 d

answer is C.

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Detailed Solution

$d = \frac{PM}{RT}; \frac{d_{He}}{d_{O_{2}}} = \frac{2 (4)}{546} \times \frac{273}{1 (32)}; d_{He} = 0.125 d_{O_{2}};$

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