Hợp chất hữu cơ E mạch hở có CTPT $C_3{H}_6{O}_{3 }$có nhiều trong sữa chua. E có thể tác dụng với Na và $N{a}_{2}C{O}_3$, còn khi tác dụng với CuO nung nóng thì tạo ra hợp chất hữu cơ không tham gia phản ứng tráng gương. CTCT của E là :

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  Thao: “How long are you going to study this subject?”

   Hang: “_____________ ”
  
  

• Choose the best answer for the following sentence:

  Hoa: “I am very tired of my homework”

  Hue: “ _____________”

   

• Choose the best answer for the following sentence:

  Hoang: “How do you like your new teachers?”

  Linh: " _______________ ".
  
  

• Choose the best answer for the following sentence:

  The highest building is on Quang Trung Street ___________ the center of my city.

• Choose the best answer for the following sentence:

  Tuan: “Would you like to go out for a snack?”

  Thu: “______________ ”
  
  

• Choose the best answer for the following sentence:

  I really don’t like ____________ up early on Sundays.
  
  

• Choose the best answer for the following sentence:

  There ______________ traffic in my city nowadays.
  
  

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

  honey                  dove                      go                     young

• Choose a word that has different stress pattern:

  profession                personality                     activity                     selection

• Find a mistake in the four underlined parts of the sentence and correct it:

  There is no need to asking her about her school results.