Trộn lẫn 200 ml dung dịch NaCl 0,2M và 300ml dung dịch Na₂SO₄ 0,2M thu được dung dịch X. Nồng độ cation Na⁺ trong dung dịch X là bao  

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Một số câu hỏi khác có thể bạn quan tâm.

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

  The doctor said, “You really ought to rest for a few days, Jasmine.”
  
  

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

  "I will pay back the money, Gloria" said Ivan.
  
  

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

  The children couldn’t go swimming because the sea was too rough.
  
  

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

  “Would you like to come to my birthday party, Sarah?” asked Frederic.
  
  

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

  opinion/ election / fair
  
  

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

  you / really / be / able / dress / yourself / age.
  
  

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

  provide / your handwriting / legible / test scorer / accept / your answer.
  
  

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

  Jack / recover / quickly / his serious illness.
  
  

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

  be / clear / what / expect / you.
  
  

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

  hilltop / have / good / view / our village.