at STP$,2\mathrm{.}00$ x $10^23$ molecules of sulfur dioxide occupy is equal to A$.1$ mole of Br$2($g$)$ B$.0\mathrm{.}5$ moles N$2($g$)$ C$.6$ x $10^23$ molecules H$2($g$)$ D$.10$ grams NO $($g$)$