Cho 0,3 mol bột Cu và 0,6 mol Fe(NO₃)₂ vào dung dịch chứa 0,9 mol H₂SO₄ (loãng). Sau khi các phản ứng xảy ra hoàn toàn, thu được V lít khí NO (sản phẩm khử duy nhất, ở đktc). Giá trị của V là :  

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose a word that has different stress pattern:

  serious                           accident                               referee                      penalty

• Choose a word that has different stress pattern:

  period              attract                arrive               perform

• Choose a word that has different stress pattern:

  college                            butter                        quarter                         supply

• Choose the best answer for the following sentence:

  In trying interviews, as in ____________ races, the start is everything.
   

• Choose the best answer for the following sentence:

  Learning the ___________ skills and techniques may not be as fun and engaging for the players.
   

• Choose the best answer for the following sentence:

  Sea Shepherd and other anti-whaling protesters have continually harassed the Japanese whaling fleet in an effort to ______________ with Tokyo's hunting season, during which it takes hundreds of minke whales in the Antarctic.
  

• Choose the best answer for the following sentence:

  When he reached the point about the fundamental and radical law, his _____________ jumped up and began to protest.
   

• Choose the best answer for the following sentence:

  The only thing I can really complain about is our lack of being able to hit ___________ shots when they matter.
   

• Choose the best answer for the following sentence:

  The students were _______________ for showing up late for class.
   

• Choose the best answer for the following sentence:

  She received me kindly, and she got me a ______________ in a shop.