[填空题]
A sample of 9.70 g o1m/6f, dhjx07c)j fu lp8 oig q1d2mmxaw(y6i f an unknown oqqh6a e:z njisa(g **y.-xc)srganic compound composed of carbon, hydrogen, and nitrogen was burnt with excess oxygen. The combustion produced nitrogen gas,27.5.)qcjnais (6 eqs:* *yx-zgah 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.