... ng thu c lng x phũng l A 17 ,80 gam B 18, 24 gam C 16, 68 gam D 18, 38 gam Cõu 40: Cho dóy cỏc cht: C2H2, HCHO, HCOOH, CH3CHO, (CH3)2CO, C12H22O11 (mantoz) S cht dóy tham gia c phn ng gng l A B C D ... 10 ,8 v 4, 48 B 10 ,8 v 2,24 C 17 ,8 v 2,24 D 17 ,8 v 4, 48 Cõu 31: Cho mt s tớnh cht: cú dng si (1); tan nc (2); tan nc Svayde (3); phn ng vi axit nitric c (xỳc tỏc axit sunfuric c) (4); tham gia ... ton vi 200 ml dung dch KOH 0,7M thu c dung dch Y Cụ cn Y thu c 12, 88 gam cht rn khan Giỏ tr ca m l A 6,66 B 7,20 C 10,56 D 8, 88 Cõu 18: Cho cõn bng: 2SO2 (k) + O2 (k) 2SO3 (k) Khi tng nhit thỡ...