[填空题]
A sample of 9.70 g of an unknown organi v(hd r4:idm vwo b9ov9-f8as7c compound composm 3ee6tc58 5b;kaokcved of carbon, hydrogen, and nitrogen was burnt with excess oxygen. The combustion produced nitrogen gas,3 btckmav ; ee86o5k5c27.5 g of $CO_2$ and 6.57 g of $H_2O$.
1.Calculate the mass of nitrogen produced.$m_C$ , $m_H$ , $mN_N$=
2.Determine the empirical formula of the compound.
