At ${25}^{\circ }C$ and $730mm$ pressure, $380ml$ of dry oxygen was collected. If the temperature is constant, what volume will the oxygen occupy at $760mm$ pressure?

The correct option is C $365mL$

Given :

$P=730mm$

$V=380mL$

$P^{\prime }=760mm$

$V^{\prime }=?$

At constant temperature,

$PV=P^{\prime }{V}^{\prime }$

$730mm\times 380mL=760mm\times V^{\prime }$

$V^{\prime }=365mL$

Hence, the volume occupied by the oxygen at 760 mm pressure is 365 mL.

Hence, the correct option is B.