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17 June, 12:40

Which Chemical Equation Is Balanced?

A) H2 + O2 - > H2O

B) H2 + 02 - > 2H2O

C) 2H2 + O2 - > 2H2O

D) 2H2 + 2O2 - > 2H2O

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Answers (1)
  1. 17 June, 12:51
    0
    A)

    the left side: 2 atoms of hydrogen, 2 atoms of oxygen

    the right side: 2 atoms of hydrogen, 1 atom of oxygen

    not balanced

    b)

    the left side: 2 atoms of hydrogen, 2 atoms of oxygen

    the right side: 4 atoms of hydrogen, 2 atoms of oxygen

    not balanced

    c)

    the left side: 4 atoms of hydrogen, 2 atoms of oxygen

    the right side: 4 atoms of hydrogen, 2 atoms of oxygen

    balanced

    d)

    the left side: 4 atoms of hydrogen, 4 atoms of oxygen

    the right side: 4 atoms of hydrogen, 2 atoms of oxygen

    not balanced

    The answer is C.
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