Nhỏ từ từ V (lít) dung dịch chứa Ba(OH)₂ 0,5 M vào dung dịch chứa x mol NaHCO₃ và y mol BaCl₂. Đồ thị sau đ}y biểu diễn sự phụ thuộc giữa lượng kết tủa và thể tích dung dịch Ba(OH)₂ như sau:

Giá trị của x và y tương ứng là:

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  Football is one of the most _____________ sports.
   

• Choose the best answer for the following sentence:

  Which was the first team ___________ for the final?
   

• Choose the best answer for the following sentence:

  It is not easy for me _____________ playing tennis.
   

• Choose the best answer for the following sentence:

  The stadium _____________ last year can contain at least 20 thousand people.
   

• Choose a word that has different stress pattern:

  tournament                     consider                   powerful                     steadily

• Choose a word that has different stress pattern:

  soccer                    forward                    nation                     severe

• Choose the best answer for the following sentence:

  A leg injury prevented the footballer from active ______________ in the final tournament.
   

• Choose the best answer for the following sentence:

  It is sport that helps us live _____________.
   

• Choose the best answer for the following sentence:

  In sport, an ________________ is a game which decides which team or player is to go through to the next stage of a particular competition.
  
  

• Choose the best answer for the following sentence:

  ____________ a game in which two teams use their hands to hit a large ball backwards and forwards over a high net without allowing the ball to touch the ground.