A 20 L vessel contains 0.1 mole of $O_2$ at 300 K. $O_3$ is prepared in the vessel by subjecting $O_2$ to silent electric discharge till the volume is reduced to 15 L at 300K. What is the number of moles of $O_3$ formed?

The number of moles in 11.2 L at STP of oxygen

Number of molecules in 1 ml of ${O_2}$ at NTP

Volume occupied by $3.01 imes {10^{23}}\;\;$ molecules of acetylene at NTP is:

$S{O_2}\,\, + \,\,2\,\,{H_2}S\,\, o \,\,3S\,\, + 2\,\,{H_2}O$ 2 mol of ${H_2}S$ and 11.2 L $S{O_2}$ at NTP react to form $imes$ mol at sulphur, then $imes$ is

2.24 L of a gas at STP weighs 3.2 g. The molecular weight of the gas is:

Weight of $112\,\,mL$ of oxygen at NTP on liquification would be: