Hỗn hợp A gồm 2 kim loại R₁, R₂ có hoá trị x, y không đổi (R₁, R₂ không tác dụng với nước và đứng trước Cu trong dãy hoạt động hóa học của kim loại). Cho hỗn hợp A phản ứng hoàn toàn với dung dịch HNO₃ dư thu được 1,12 lít khí NO duy nhất ở đktc. Nếu cho lượng hỗn hợp A trên phản ứng hoàn toàn với dung dịch HNO₃ thì thu được bao nhiêu lít N₂. Các thể tích khí đo ở đktc :   

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

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

  We'd have been here sooner, but we did several stops along the way.

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

  Because of the rain, we weren't able to spend much the day on the beach.

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

  We offer you a comprehension training in all aspects of the business.

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

  It crossed my mind yesterday what you must be a bit short of staff - shall I send someone  to help out?

• Choose the correct sentence which is built from the words and phrases given:

   English / borrow / words / more than 50 different languages
  
  

• Choose one sentence that has the same meaning as the root one:

  Mary called me because she wanted me to give her some advice.
  
  

• Choose one sentence that has the same meaning as the root one:

  It was not warm enough for us to take a leisurely walk.
  
  

• Choose one sentence that has the same meaning as the root one:

  It was impossible for Jim to complete the exam.
  
  

• Choose one sentence that has the same meaning as the root one:

  This quarrel is likely to lead to a fight.
  
  

• Choose one sentence that has the same meaning as the root one:

  London has dealt with the problems of pollution.