Cho m gam hỗn hợp X gồm Ba và Al vào 200 ml dung dịch HCl 1M, thấy tan hoàn toàn và sau phản ứng thu được dung dịch Y chứa hai chất tan và thấy thoát ra 11,2 lít khí H₂ (đktc). Giá trị của m là:         

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

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

  Leave early or we won't catch the last bus.
  
  

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

  You drink loo much coffee, that's why you can't sleep.
  
  

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

  psychology                      psychics                        pneumonia                       polymer

• Choose a word that has different stress pattern:

  reintroduce                       disappearance                        scientific                         circulation

• Choose the best answer for the following sentence:

  The famous architect, Frank Lloyd Wright, ____________. 
  
  

• Choose the best answer for the following sentence:

  Mr Smith was ____________ in a road accident.
   

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

  Mr. Brown was last seen in July 1978.
  
  

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

  Bob had better go before it gets dark.
  
  

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

  Every poor child is given some money.

   

• Choose a word that has different stress pattern:

  refusal                      acceptance                          suitable                   minority