# Chapter 2 Atoms, Molecules, and Ions - Study Questions - Page 95e: 84

$C_4H_8N_2O_2$

#### Work Step by Step

Empirical formula ($C_2H_4NO$)'s molar mass: $M_u=58.06\ g/mol$ Molar mass: $M=116.1\ gmol$ Number of units $M/M_u=2.0$ So the molecular formula is $C_4H_8N_2O_2$

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