Phương trình 2H⁺ + S^2- → H₂S là phương trình rút gọn của phản ứng:

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:

  I love sitting on the bank of the river to do nothing.

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

  Her son was considered to have the ability of entering university at the age of sixteen.

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

  This is the worst film where I have ever seen.

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

  people / more / frightened / unemployed / need / be //.
  
  

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

  wildlife                    side                    live                       require

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

  mate                     great                         prey                        have

• Choose a word that has different stress pattern:

  parliamentary                   documentary                   dictionary                    elementary

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

  My mother is not at home now, she has been shopping.

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

  We haven’t had any holiday away from home since 5 years.

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

  I don’t supposed you have change for a pound, don’t you?