... ng Phi dựng bao nhiờu lớt khớ N2 v bao nhiờu lớt H2 iu ch c 11, 2 lớt NH3 Bit rng hiờu sut phn ng chuyn hoỏ l 30% Cho dung dch cú cha 11, 76 g H3PO4 vo dung dch cú cha 16,8 g KOH Tớnh lng cỏc mui ... oxi, thu c 3g hn hp rn X Ho tan ht hn hp X dd HNO d, thoỏt 0,56lit ( ktc) NO (l sn phm nht) Giỏ tr ca m l: A.2,22 B.2,26 C.2,52 D.2,32 Cõu 30:Ho tan 0,6 g kim loi M vo dung dch HNO3 d thu c 0 ,112 ... tha biu thc no sau õy? A a + 2c = 2b + d B a + 2c = b + d C 2a + c = b + 2d D a + b = c + d Cõu 11 a Theo Aren-niut cht no sau õy l axit? A KOH B Al(OH)3 C CH3COONa D HCl b Theo Aren-niut cht...