... Ala-Gly-Ala-Val-Gly-Val v Y l tetrapeptit Gly-Ala-Gly-Glu Thy phõn hon ton m gam hn hp gm X v Y thu c amino axit, ú cú 30 gam glyxin v 28,48 gam alanin Giỏ tr ca m l A 77,6 B 83,2 C 87,4 D 73,4 HD Ala-Gly-Ala-Val-Gly-Val ... Dung dch axit axetic phn ng c vi tt c cỏc cht dóy no sau õy? A Na, NaCl, CuO B Na, CuO, HCl C NaOH, Na, CaCO3 D NaOH, Cu, NaCl Cõu 17: Tờn thay th (theo IUPAC) ca (CH3)3C-CH2-CH(CH3)2 l A 2,2,4-trimetylpentan ... gam X, hp th ton b sn phm chỏy bng dung dch NaOH d, lng dung dch tng thờm 40,08 gam Tng lng ca hai axit cacboxylic khụng no m gam X l A 15,36 gam B 9,96 gam C 18,96 gam D 12,06 gam HD Gi CT axit...