\(\left[C_6H_7O_2\left(OH\right)_3\right]_n+3nHNO_3\rightarrow\left[C_6H_7O_2\left(ONO\right)_3\right]_n+3nH_2O\\ n_{xenlulozo}=n_{xenlulozotrinitrat}=\dfrac{8,1}{162}=0,05\\ \Rightarrow m_{xenlulozotrinitrat}=0,05.297=14,85\left(kg\right)\\ VìH=90\%\\ \Rightarrow m_{xenlulozotrinitrat}=14,85.90\%=13,365\left(kg\right)\\ \Rightarrow ChọnC\)