... A ClH3N-CH2-COOH, H2N-CH2-COOCH3, H2N-CH2-CH2ONa B H2N-CH2-COONa, ClH3N-CH2-COOH, H2N-CH2-COOH C CH3-COOCH3, H2N-CH2-COOCH3, ClNH3CH2-CH2NH3Cl D H2N-CH2-COOH, H2N-CH2-COONH4, CH3-COONH3CH3 Câu ... ứng : Fe + 2Fe3+ -> 3Fe2+ Cu + 2Fe3+ -> 2Fe2+ + Cu2+ Câu 7: A Câu 8: C (2) CuS ; (3) H2SiO3 ; (5) Al(OH )3 ; (6) BaSO4 Câu 9: C H2SO4.3SO3 + 3H2O -> 4H2SO4 => nH2SO4 = ½ nKOH = 0, 02 mol => nOleum ... ; t nBr2 = 2nC2H2 +nC3H6 = 2x + y = 0, 13 mol (1) mX = 26 x + 42y + 58z + 2t = 3, 82g (2) Xét 0,6 mol X gấp a lần lượng chất 3, 82g X ,nX = a.(x + y + z + t) = 0,6 mol (3) nCO2 = a.(2x + 3y + 4z)...