Hòa tan 64 gam hỗn hợp muối gồm CuSO4, FeSO4, Fe2(SO4)3, MgSO4 trong đó lưu huỳnh chiếm 25% về khối lượng vào nước được dung dịch X. Cho X tác dụng với dung dịch Ba(OH)2 vừa đủ thu được m gam kết tủa. Giá trị của m là         

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the word that has the underlined part pronounced differently from the rest:

  splutter                dusk              lunch             huge

• Choose the word that has the underlined part pronounced differently from the rest:

  leaves              pitches           ranges              places

• Choose the word that has the underlined part pronounced differently from the rest:

  pasture             acquaintance              constant               talkative

• Choose the word that has the underlined part pronounced differently from the rest:

  uncertain               tell                pursuit                picture

• Choose the best answer for the following sentence:

  My friend often shows her ______________ whenever I have troubles.
   

• Choose the best answer for the following sentence:

  Daisy is so ____________. She only cares about herself, not about other people.
   

• Choose the best answer for the following sentence:

  John left a _______________ impression on me. I will never forget him.
  
  

• Choose the best answer for the following sentence:

  Two friends should be loyal _____________ each other.
   

• Choose the best answer for the following sentence:

  The teacher never lets us ______________out when _______________.
   

• Choose the best answer for the following sentence:

  Whenever I see an action film, I feel my heart ______________ strongly.