cho hh than uot CO,CO2,H2 hoi nc nug voi than nog o nhiet cao,cho 6.16 l kdtc tâc dug voi ZnO du,dun nog,thu dc hh chat ran B va hh C,hoa tan het hh B bang đ HNO3 dam dac thu dc 0.05mol N02.tinh phan tram the tich moi tren