[填空题]
A sample of 9.70 g of an unknown organic compound compose)d*fs;j cz8o8nj;0q wjc0yoi d of carbon, hydrogenfb:q ;2 u-tcqn5nmwg u5s.ss:, and nitrogen was burnt with excess oxygen. The combustion produced nitb5q sus g :n:5cmfqwntu2;s-. rogen gas,27.5 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.
