[填空题]
A sample of 9.70 g of aghik( mh6ci*ck4r..nn unknownj5 twz p(g.0qzy2d/x z organic compound composed of carbon, hydrogen, and nitrogen was burnt with excess oxygen. The combustion produced nitrogen gas,27.5 52 0/.djqyxz(p wzt gzg 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.
