Thí nghiệm được tiến hành như hình vẽ. Hiện tượng xảy ra trong bình đựng dung dịch AgNO₃ trong NH₃ là: 

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

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

  explained              disappointed               prepared                 interviewed

• Choose one sentence that has the closest meaning to the root one:

  Those who are riding a motorbike are not allowed to take off their helmet.
  
  

• Choose one sentence that has the closest meaning to the root one:

  John, whose cough is terrible, needs to see a doctor.
  
  

• Choose one sentence that has the closest meaning to the root one:

  The last time when I saw her was three years ago.  

• Choose one sentence that has the closest meaning to the root one:

  It is the earth’s gravity that gives us our weight.
  
  

• Choose one sentence that has the closest meaning to the root one:

  It was your assistance that enabled us to get achievement.
  
  

• Choose a word that has different stress pattern:

  technical                 advertise                 candidate                consider

• Choose a word that has different stress pattern:

  experience                 certificate                interviewer                enthusiasm

• Choose a word that has different stress pattern:

  addition             suitable                 shortcoming                 honestly

• Choose a word that has different stress pattern:

  qualification            disappointedly               responsibility               recommendation