112.0ml of $NO_2$ at STP was liquefied,the density of the liquid being $1.15gmL^{-1}$.Calculate the volume and the number of molecules in the liquid $NO_2$.

Question

$\begin{array}{1 1}(a)\;0.10mL\;and\;3.01\times 10^{22}\\ (b)\;0.20mL\;and\;3.01\times 10^{21} \\(c)\;0.20mL\;and\;6.02\times 10^{23}\\(d)\;0.10mL\;and\;6.02\times 10^{21}\end{array}$