Đáp án:
`Zn`
Giải thích các bước giải:
`A+Cl_2->ACl_2`
`A+2HCl->ACl_2+H_2↑`
`n_{HCl}=0,2.1=0,2(mol)`
`n_A=0,5n_{HCl}=0,1(mol)`
`n_{ACl_2}=n_A=0,1(mol)`
`M_{ACl_2}=(13,6)/(0,1)=136(g//mol)`
`=>M_A+35,5.2=136`
`=>M_A=65`
Vậy `A` là `Zn`
Ai giúp e với điiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii ạ ,em đag cần gấp
Lói là off kơ mờ vẫn ngoiii lên đây chs tí :^ Có nên cko người khác dùng acc lày khum các pác ;-; Vẽ anime/ chibi Yc: Full line, màu tùy, luật :)
Calli : The Ocean NL : nhóm 12 TV mà chỉ có 10 ng cày vẫn vô đc top 19 :)))
V. Complete the sentences, using the correct form of the bold words in brackets. 1. Is she to break the customs of her family? (permission) 2. Today, we are going to discuss the of traditions. (necessary) 3. The offspring will follow the customs without . (oblige) 4. My dad is the of this wedding anniversary party. (hostess) 5. Do you have to follow the traditions ? (strict) 6. Ao dai is one of the items of Vietnam. (tradition) 7. She was taught a lot skills by her parents. (society) 8. In some ethnic groups, the elderly their next generations to accept the customs. (obligation) 9. I have learned several lessons from the folk tales. (morally) 10. Under the new __, workers have to wear protective clothes. (regulate)
Em đag cần gấp lắm ạ . Giải hộ em các câu này vs ạ. Em cảm ơn
26. People spend a lot of money on advertising everyday..................................................... 27. They may use this room for the classroom....................................................... 28. The teacher is going to tell a story............................................................................. 29. Marry is cutting the cake with a sharp knife............................................................................. 31. She used to pull my hat over my eyes................................................................................. 32., I have done all my washing by hand.................................................................. 33. A pair of Robins has built a nest in the porch since last week............................................................................. 34. The police haven’t found the murderer yet............................................................................... 35. They sold one of her paintings at $1,000...................................................................................... 37. People speak English in almost every corner of the world................................................................ 38You mustn’t use the machine after 5.30 p.m.............................................................................. 41. You must clean the wall before you paint it................................................................................. 42. They told the new pupil where to sit....................................................................................... 44. Nobody has ever treated me with such kindness.................................................................................... 45. No one believes this story......................................................................................................... 46. A sudden increase in water pressure may break the dam. 47. We must take good care of books from the library. 48. I know told me about it.............................................................................
cho 6,72 khí Cl tác dụng dư với kim loại m thu được 26,7 gam muối.xác định m
Em hãy điền vào bảng niên biểu Cách mạng tư sản Pháp cuối thế kỉ XVIII
Hoàn thành các phương trình hoá học cho các phản ứng sau
Mọi người giúp em với ạ!!!! Em cảm ơn nhiều ạ !!!!
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