0.0800 g of a compound with the empirical formula C2H2N is dissolved in 10.00 g benzene. The resulting solution freezes at 4.99 °C. Benzene freezes at 5.48 °C and has a freezing point depression constant of Kf = 4.90 °C/m. What is the molecular formula of the compound?
◦ C3H2N
◦ C3H3N
◦ C4H4N2
◦ C6H6N3
◦ C8H8N4