Cần điều chế 6,72 lít H₂ (đktc) từ Fe và dung dịch HCl hoặc dung dịch H₂SO₄ loãng. Axit nào dưới đây cần lấy số mol nhỏ hơn?

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

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

  We are very appreciative of what you have done for the orphans.

   

   

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

  He suggests making a donation to the orphanage’s fund.

   

   

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

  He said that if he had been me he would have applied for a job in the city.

   

   

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

  He spends all his free time fishing.
  
  

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

  I / write / thank you / make a donation / our old people’s home

   

   

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

  sum of money / we / build / ten more rooms / buy / some new furniture

   

   

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

  We / repair / the yard / the gate

   

   

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

  I like talking to people who have the sense of humour.
  
  

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

  Once again / we / obliged / you / your donation

   

   

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

  He has been addicted to alcohol since his wife died.