MCQ
Energy required to dissociate, $16\,g$ oxygen gas into free atom is $x\,kJ$ . The heat of atomisation of oxygen is
- A$x/2$
- ✓$2x$
- C$x$
- D$16$
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$(I) 0.5\ mole$ of $O_3$ $(II) 0.5\ gm$ atom of oxygen $(III) 3.011 \times 10^{23}$ molecules of $O_2$ $(IV) 5.6\ litre$ of $CO_2$ at $STP$
(Round off to the Nearest integer) [Given : Atomic masses : $C =12.0 \,u , H : 1.0\, u,O : 16.0 \,u , Br =80.0 \,u ]$