How many grams of iron are theoretically produced by the reduction of $1 \ kg$ of $Fe_2O_3$?

For the following reaction,the mass of water produced from $445 \ g$ of $C_{57}H_{110}O_6$ is .............. $g$.
$2C_{57}H_{110}O_{6(s)} + 163O_{2(g)} \to 114CO_{2(g)} + 110H_2O_{(l)}$

$5.75 \ mg$ of sodium vapour is converted to sodium ion. If the ionisation energy of sodium is $490 \ kJ \ mol^{-1}$ and atomic weight is $23 \ g \ mol^{-1}$, the amount of energy needed for this conversion will be (in $kJ$)

Amount of oxygen required for combustion of $1 \, kg$ of a mixture of butane and isobutane is ............. $kg$.

When $1 \ L$ of $CO_2$ is heated with graphite,the volume of the gases collected is $1.8 \ L$. What will be the number of moles of $CO$ produced at $STP$?

At $T \ K$, $100 \ L$ of dry oxygen is present in a sealed container. It is subjected to silent electric discharge, until the volumes of oxygen and ozone become equal. What is the volume (in litres) of ozone formed at $T \ K$?