... : 42 gam B 44 gam C 46 gam D 48 gam Bµi gi¶i: 40 nCO2 nCO3 0,4mol 100 C6H12O6 2C2H5OH + 2CO2 http:/ /megabook. vn 0,2 H = 75% 0 ,4 mglucozo = 0,2.180 100 48 gam 75 D ®óng C©u Dïng 340 ,1... 44 8,0 C 286,7 D 2 24, 0 Bµi gi¶i: §Ĩ tỉng hỵp 250 kg th× cÇn 40 00 mol PVC Ta cã tû lƯ: 2CH4 (8000mol)-> PVC (40 00mol) 8000.22, 4 .100 35 840 0ml 50 35 840 0 .100 44 8000ml 44 8 lit 80 V× hiƯu st... 0, 04 mol ThĨ tÝch r-ỵu nguyªn chÊt lµ: V 5 .46 2,3 lit mC2 H5OH 2,3.0,8 1, 84 kg 100 1, 84 0, 04 mC6 H10O5 0, 02.162 3, 24 kg v× hiƯu st =72 % nªn khèi 46 3, 24 .100 4, 5 kg