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12 March, 18:16

Some bleaches contain hydrogen peroxide as their active ingredient, while others contain sodium hypochlorite. Both these chemicals contain an element that makes a colored stain colorless. What is that element?

Question 11 options:

A) nitrogen

B) oxygen

C) phosphorous

D) hydrogen

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Answers (1)
  1. 12 March, 20:23
    0
    B) oxygen, because oxygen is the only element that is in both chemical formulas.
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