Khi cho 0,1 mol X (có tỉ khối hơi số với H₂ lớn hơn 20) tác dụng với dung dịch AgNO₃ trong NH₃ dư, thu được 43,2g Ag. X thuộc loại anđehit

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose a word that has different stress pattern:

  refusal                      acceptance                          suitable                   minority

• Choose a word that has different stress pattern:

  idea                          meeting                        special                          station

• Choose the best answer for the following sentence:

  Did you see that fascinating wildlife programme _____________ television last night?
   

• Choose the best answer for the following sentence:

  The cost of the hotel room doesn't usually _____________ the price of breakfast.
   

• Choose the best answer for the following sentence:

  If you want to have a pet you must be ready to ___________ care of it for several years.
   

• Choose the best answer for the following sentence:

  If I were you, ____________  phone and tell her you're going to be late.
   

• Choose the best answer for the following sentence:

  Henry ___________ a rich man today if he had been more careful in the past.
   

• Choose the best answer for the following sentence:

  I left my last job because I had no ___________ to travel.
   

• Choose the best answer for the following sentence:

  The house is conveniently ___________ about a mile from the shopping centre.
   

• Choose the best answer for the following sentence:

  Greater spending on education is expected to lead a large increase ___________ the number of students.