5
5r5r5r


moi nguoi giup toi;trong bai thi thu dai hoc co cau tim dong phan C7H8O co vong ben zen va ko tac dung voi NAOH dap so co 2 nhung theo minh thi chi co mot thoi do la C6H5CH2OH lieu minh sai hay dap an sai
help me
help me