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      Question

      _________is a formula for

      rust.
      A Feâ‚‚ OHX Hâ‚‚ O Correct Answer Incorrect Answer
      B Fe 0_3 x Hâ‚‚ O Correct Answer Incorrect Answer
      C Feâ‚‚ O_3 xHâ‚‚ O Correct Answer Incorrect Answer
      D Feâ‚‚ Ox Hâ‚‚ O Correct Answer Incorrect Answer

      Solution

      The correct answer is C

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